NHTSA Interpretation File Search
Overview
NHTSA's Chief Counsel interprets the statutes that the agency administers and the standards and regulations that it issues. Members of the public may submit requests for interpretation, and the Chief Counsel will respond with a letter of interpretation. These interpretation letters look at the particular facts presented in the question and explain the agency’s opinion on how the law applies given those facts. These letters of interpretation are guidance documents. They do not have the force and effect of law and are not meant to bind the public in any way. They are intended only to provide information to the public regarding existing requirements under the law or agency policies.
Understanding NHTSA’s Online Interpretation Files
NHTSA makes its letters of interpretation available to the public on this webpage.
An interpretation letter represents the opinion of the Chief Counsel based on the facts of individual cases at the time the letter was written. While these letters may be helpful in determining how the agency might answer a question that another person has if that question is similar to a previously considered question, do not assume that a prior interpretation will necessarily apply to your situation.
- Your facts may be sufficiently different from those presented in prior interpretations, such that the agency's answer to you might be different from the answer in the prior interpretation letter;
- Your situation may be completely new to the agency and not addressed in an existing interpretation letter;
- The agency's safety standards or regulations may have changed since the prior interpretation letter was written so that the agency's prior interpretation no longer applies; or
- Some combination of the above, or other, factors.
Searching NHTSA’s Online Interpretation Files
Before beginning a search, it’s important to understand how this online search works. Below we provide some examples of searches you can run. In some cases, the search results may include words similar to what you searched because it utilizes a fuzzy search algorithm.
Single word search
Example: car
Result: Any document containing that word.
Multiple word search
Example: car seat requirements
Result: Any document containing any of these words.
Connector word search
Example: car AND seat AND requirements
Result: Any document containing all of these words.
Note: Search operators such as AND or OR must be in all capital letters.
Phrase in double quotes
Example: "headlamp function"
Result: Any document with that phrase.
Conjunctive search
Example: functionally AND minima
Result: Any document with both of those words.
Wildcard
Example: headl*
Result: Any document with a word beginning with those letters (e.g., headlamp, headlight, headlamps).
Example: no*compl*
Result: Any document beginning with the letters “no” followed by the letters “compl” (e.g., noncompliance, non-complying).
Not
Example: headlamp NOT crash
Result: Any document containing the word “headlamp” and not the word “crash.”
Complex searches
You can combine search operators to write more targeted searches.
Note: The database does not currently support phrase searches with wildcards (e.g., “make* inoperative”).
Example: Headl* AND (supplement* OR auxiliary OR impair*)
Result: Any document containing words that are variants of “headlamp” (headlamp, headlights, etc.) and also containing a variant of “supplement” (supplement, supplemental, etc.) or “impair” (impair, impairment, etc.) or the word “auxiliary.”
Search Tool
NHTSA's Interpretation Files Search
| Interpretations | Date |
|---|---|
ID: aiam3831OpenMr. John B. McMillan, Manning, Fulton, and Skinner, Raleigh, NC; Mr. John B. McMillan Manning Fulton and Skinner Raleigh NC; Dear Mr. McMillan: This is in response to your March 5, 1984 letter regarding the exten to which an automotive remote starting device which one of your clients wishes to market is compatible with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) 114, *Theft Protection*. This device would permit a vehicle to be started from a remote location using a signal transmitter, provided the vehicle's gear shift is in the park position, the emergency brake is set, the hood is closed, and all the vehicle doors are closed. Further, should any of these failsafe systems become deactivated (e.g., gear shift level moved out of the park position), the engine would automatically shut off.; FMVSS 114 requires that passenger cars as well as trucks an multipurpose passenger vehicles with a gross vehicle weight rating of 10,000 pounds or less must have a key locking system that, when the key is removed, will prevent normal activation of the vehicle's engine and either steering or forward self-mobility. We presume that the steering/transmission lock feature is unaffected by your client's device. Therefore, the question presented by your client's system is whether that device, which permits activation of the engine when the ignition key is removed, permits 'normal activation' of the vehicle.; In a previous agency interpretation (copy enclosed), the agenc described certain characteristics of a remote starting system similar to your client's which we concluded were outside the concept of 'normal activation.' These characteristics were automatic deactivation of the remotely started engine when a vehicle door is opened, maintenance of the steering column or gear shift locking feature until the ignition key is inserted in the vehicle, and automatic deactivation of the remotely started engine after 15 minutes (unless the key is inserted in the ignition).; Your client's device apparently has some of these same characteristic as this previously considered device, as well as other automatic engine deactivation features which are comparable in nature. Therefore, we conclude your client's device does not conflict with the requirements of FMVSS 114, since it does not permit normal activation of the engine without the ignition key.; Sincerely, Frank Berndt, Chief Counsel |
|
ID: aiam4372OpenTak Fujitani, Program Manager, Inspection Services, Office of Fleet Administration, 1416 -10th- Street, 2d Floor, Sacramento, CA 95814; Tak Fujitani Program Manager Inspection Services Office of Fleet Administration 1416 -10th- Street 2d Floor Sacramento CA 95814; Dear Mr. Fujitani: This letter responds to your inquiries addressed to Joan Tilghman of m staff. Your letters concern buses purchased by the State of California, and manufactured by Champion Home Builders, Commercial Vehicle Division (Champion). You inform us that Champion is a final stage manufacturer of vehicles built on a Ford chassis. You have rejected delivery of these vehicles because you assert that they do not comply with either California or Federal motor vehicle regulations. This response addresses only those issues arising from Federal requirements.; As I understand your letters, you pose two principle questions. First you ask whether classifying an incomplete vehicle as a 'chassis' rather than as a 'chassis cab' means that a final stage manufacturer can not alter the original chassis manufacturer's gross vehicle weight rating (GVWR). You assert that Champion's altering of the GVWR on a vehicle classified as a 'chassis' is a noncompliance under 49 CFR sections 567.5 and 568.4 which you may use as grounds for rejecting delivery of Champion's vehicles.; Your second question involves data set out in your letter of April 14 suggesting that Champion's certified GVWR for these vehicles is less than the sum of the unloaded vehicle weight, the rated cargo load, and 150 lbs. times the vehicles' designated seating capacity. You state that this circumstance is a second noncompliance with Federal regulations upon which you have rejected delivery of Champion's buses.; >>>*The Cutaway Chassis/Chassis Cab Question*.<<< In both your letters, you refer to provisions of 49 CFR 567.5 an 568.4, and to a 1977 Federal Register document (42 FR 37814, 37816, July 25, 1977). You state your interpretation of these 49 CFR provisions as 'mean(ing) that final stage manufacturers (who build on RV cutaways) are not authorized to alter the (GVWR) imposed by incomplete vehicle manufacturers since final stage manufacturers do not have any basis for certifying a greater load carrying capaci(ty) without altering axle components to handle the extra load.' As I understand it, when you speak of an RV cutaway you mean a vehicle chassis with an incomplete occupant compartment, intended for completion as a recreational vehicle. For any incomplete vehicle (including a cutaway or chassis cab), Part 568 requires the incomplete vehicle manufacturer to provide a document that describes how to complete the vehicle without impairing the vehicle's compliance status. This document is *not* a certification.; If the incomplete vehicle is other than a chassis cab, the final stag manufacturer who builds on the incomplete vehicle must certify its compliance with all applicable Federal motor vehicle safety standards (FMVSS). On the other hand, the certification process is different if an incomplete vehicle meets the agency's definition of 'chassis cab.' The Federal Register document to which you refer amended 49 CFR Parts 567 and 568 to conform with a court decision holding that NHTSA could not require a final stage manufacturer to make the 'sole certification' of compliance for a vehicle built on a chassis cab. As a consequence of this decision, NHTSA established a dual certification scheme for such vehicles in which the chassis cab manufacturer makes one certification statement in each of three categories, and the final stage manufacturer makes corresponding statements depending on how the final stage manufacturer affects any applicable Federal motor vehicle safety standard (FMVSS).; Under this dual certification scheme, the original chassis ca manufacturer may provide instructions telling a final stage manufacturer how to complete a vehicle so that it conforms with applicable FMVSS. The final stage manufacturer has the choice of either conforming his work to the chassis cab manufacturer's instructions and shifting the burden under Part 567 of certifying compliance to the chassis cab manufacturer, or deviating from those instructions, and assuming the certification burden for himself. Further, the final stage manufacturer must certify compliance respecting any FMVSS for which the chassis cab manufacturer makes no representation.; While you are correct that in the 1977 Federal Register document th agency decided to exclude RV cutaways from the definition of 'chassis cab,' the only effect of this exclusion is that dual certification requirements do not apply to vehicles completed on an RV cutaway.; Therefore, the answer to your first question is that a final stag manufacturer may change the GVWR for any incomplete vehicle, irrespective of whether he builds the completed vehicle on an RV cutaway or a chassis cab. However, if the final stage manufacturer changes the GVWR for the vehicle, it must certify that the vehicle complies with all applicable FMVSS at this new GVWR. Compliance with Standards No. 105, *Hydraulic Brake Systems*, and No. 120, *Tire Selection and Rims for Vehicles Other Than Passenger Cars* might well be affected by an increase in the GVWR. The final stage manufacturer is required to exercise 'due care' when certifying that its vehicle complies with all safety standards at this increased GVWR. Our Office of Vehicle Safety Compliance has asked the final stage manufacturer of these vehicles to provide the data and other evidence that were the basis for Champion's certification of compliance at this higher GVWR.; >>>*Champion's Certified GVWR Calculation*.<<< Part 567 of NHTSA regulations sets out requirements for affixing certification label or tag to a motor vehicle. Section 567.4(g)(3) of that Part states that the certified GVWR:; >>>'...shall not be less than the sum of the unloaded vehicle weight rated cargo load, and 150 pounds times the vehicle's designated seating capacity. However, for school buses the minimum occupant weight allowance shall be 120.'<<<; In your April letter, you supply weightmaster readings for the tw Champion motor vehicles that are the subject of your inquiry. While Champion certifies the GVWR for both these vehicles at 12,000 pounds, you indicate that according to your S567.4(g)(3) calculation, the sums are 12,147 pounds and 12,580 pounds. This agency considers vehicle overloading a serious safety problem for the affected vehicle and for the motoring public, and NHTSA may take appropriate remedial action against any manufacturer whose vehicle, laden with its intended cargo load, exceeds the manufacturer's GVWR. NHTSA's Office Of Vehicle Safety Compliance is investigating this matter further.; Sincerely, Erika Z. Jones, Chief Counsel |
|
ID: aiam5591OpenHelen A. Rychlewski MGA Research Corporation 900 Mandoline Street Madison Heights, MI 48071; Helen A. Rychlewski MGA Research Corporation 900 Mandoline Street Madison Heights MI 48071; "Dear Ms. Rychlewski: This responds to your letter of June 7, 1995, t the National Highway Traffic Safety Administration (NHTSA), requesting an interpretation of whether a vehicle can be certified as meeting the seat back requirements in S3.2 of Federal Motor Vehicle Safety Standard (FMVSS) No. 201, Occupant Protection in Interior Impact, based on the results of a particular test. The vehicle is equipped with a seat with an inertial latch on the recliner. In order to keep the seat from folding forward during the test procedure specified in FMVSS No. 201, you welded the inertial latch to conduct the test. In past agency interpretation of the safety standards, NHTSA has stated that if (1) there are two or more possible conditions under which a compliance test may be conducted (e.g., whether an inertial lock is engaged or not), (2) the standard does not specify which test condition is to be used, and (3) the language of the standard as a whole and the standard's purpose do not imply a limit that would make one of those conditions inappropriate, there is a presumption that the requirements have to be met under all test conditions. The intent of FMVSS No. 201 is to minimize injuries caused by an occupant striking interior components during a crash. Because inertial latches are intended to lock during a crash, NHTSA believes that testing with the inertial latch engaged most closely indicates the protection offered to an occupant during a crash. Therefore, NHTSA would test a vehicle seat back on a seat with an inertial latch with the latch engaged. The test procedures in NHTSA standards are the procedures NHTSA will use in compliance testing. While manufacturers are not required to test their products using those procedures, they must ensure that the vehicle would comply when tested by NHTSA. NHTSA could weld the latch as you have done, or could engagethe inertial latch through other means. If you believe that the test you conducted indicates that the seat back will comply when tested by NHTSA with the latch engaged, such a test may be the basis for your certification. I hope this information has been helpful. If you have any other questions or need additional information, please contact Mary Versailles of my staff at this address or by phone at (202) 366-2992. Sincerely, John Womack Acting Chief Counsel"; |
|
ID: aiam5503OpenMr. Harry C. Gough, P.E. State of Connecticut Department of Motor Vehicles 60 State Street Wethersfield, CT 06161; Mr. Harry C. Gough P.E. State of Connecticut Department of Motor Vehicles 60 State Street Wethersfield CT 06161; "Dear Mr. Gough: This responds to your letter to this office askin whether the retroreflective tape required to outline school bus emergency exits can, in the case of the rear emergency door, be placed on the door itself. The short answer is no. You stated that the State of Connecticut requires that school bus bumpers be black. You further stated that one school bus manufacturer supplied buses with the bottom piece of the retroreflective tape installed on the rear bumper. You then noticed that a number of school buses from a different manufacturer had the bottom part of the tape installed on the door itself. You asked whether the language of S5.5.3 of Federal Motor Vehicle Safety Standard (FMVSS) No. 217, Bus emergency exits and window retention and release, permitted the installation of the retroreflective tape on the door itself. Paragraph S5.5.3 of FMVSS No. 217 (49 CFR 571.217) provides: Each opening for a required emergency exit shall be outlined around its outside perimeter with a minimum 3 centimeters wide retroreflective tape, either red, white, or yellow in color, . . . This requirement was imposed by amendment to FMVSS No. 217 promulgated by a final rule published in the Federal Register on November 2, 1992 (57 FR 49413). In discussing this requirement in the preamble portion of the final rule, we said at 57 FR 49421: Accordingly, the final rule requires a minimum 1 inch wide strip of retroreflective tape, either red, white, or yellow in color, to be placed around the outside perimeter of the emergency exit opening, not the emergency exit itself (emphasis added). As you may know, the buses with the tape on the emergency exit doors have been recalled by the manufacturer. For information about the recall, you can contact the bus manufacturer, Thomas Built Buses, P. O. Box 2450, High Point, NC 27261. Enclosed for your information are two interpretative letters issued by this office on related issues pertaining to the retroreflective tape requirement. See letter to Mr. Thomas D. Turner, Manager, Engineering Services, Blue Bird Body Company, dated July 7, 1993, and letter to Mr. Turner dated March 28, 1994. I hope the above information is helpful to you. Should you have any further questions or need additional information, please feel free to contact Walter Myers of my staff at this address or at (202) 366-2992. Sincerely, Philip R. Recht Chief Counsel Enclosures"; |
|
ID: aiam3801OpenMr. Daniel J. Roberson, Comfort-Tour Cycle Products, 8724 116th Avenue, N. E., Kirkland, WA 98033; Mr. Daniel J. Roberson Comfort-Tour Cycle Products 8724 116th Avenue N. E. Kirkland WA 98033; Dear Mr. Roberson: This responds to your letter of November 29, 1983, to the Office o Vehicle Safety Compliance, which was forwarded to this office for reply, concerning the legal requirements regulating the manufacture of motorcycle windshields. You requested information on how you as a manufacturer may obtain certification of your product under the National Traffic and Motor Vehicle Safety Act.; The National Highway Traffic Safety Administration (NHTSA) has th authority to govern the manufacture of new motor vehicles and motor vehicle equipment, and pursuant to the National Traffic and Motor Vehicle Safety Act we have promulgated Federal Motor Vehicle Safety Standard No. 205 (FMVSS No. 205), *Glazing Materials*. FMVSS No. 205 incorporates by reference the American National Standard 'Safety Code for Safety Glazing Materials for Glazing Motor Vehicles Operating on Land Highways,' Z26.6-1966 (ANS Z26). These requirements for glazing used in vehicles and motorcycles, such as minimum levels of light transmittance and abrasion resistance. Copies of FMVSS No. 205 and ANS Z26 have been enclosed in the letter sent to you by the Office of Vehicle Safety Compliance dated January 10, 1984.; You should be aware that the NHTSA does not pass approval on th compliance of any vehicle or equipment with a safety standard before the actual events that underlie certification. Under the Vehicle Safety Act, it is your responsibility as a manufacturer to determine whether your windshields comply with all applicable safety standards and regulations, and to certify your products in accordance with that determination.; There are other regulations and standards affecting manufacturers o motor vehicle equipment of which you should be aware. For instance, manufacturers of motor vehicle equipment have specific responsibilities under the National Traffic and Motor Vehicle Safety Act regarding safety- related defects in their products. Sections 151 *et* *seq.* of the Act a copy of which is enclosed, requires manufacturers to notify purchasers about safety-related defects in their product and to remedy such defects without charge. In addition, Part 556 requires vehicle and equipment manufacturers to provide the agency with certain information concerning themselves and the products they manufacture. I am enclosing an information sheet explaining how you can obtain copies of the agency's regulations. You should refer to the Act and its implementing regulations in order to understand the extent of your responsibilities as a manufacturer of motor vehicle equipment.; Sincerely, Frank Berndt, Chief Counsel |
|
ID: aiam5317OpenMs. Jane L. Dawson Specifications Engineer Thomas Built Buses, Inc. Post Office Box 2450 1408 Courtesy Road High Point, NC 27261; Ms. Jane L. Dawson Specifications Engineer Thomas Built Buses Inc. Post Office Box 2450 1408 Courtesy Road High Point NC 27261; Dear Ms Dawson: This responds to your letter to Walter Myers of thi office in which you posed two questions regarding interpretation of certain provisions of Federal Motor Vehicle Safety Standard (FMVSS) 217, Bus Window Retention and Release. Your first question related to the definition of 'daylight opening' found in the final rule amending FMVSS 217, dated November 2, 1992 (57 FR 49413) (hereinafter Final Rule). Specifically, you asked what constitutes an obstruction and how close does it have to be to the exit to be considered an obstruction. The term 'daylight opening' is defined in the Final Rule as 'the maximum unobstructed opening of an emergency exit when viewed from a direction perpendicular to the plane of the opening.' This refers to the total area of the opening, whether the door or window is open or closed. An obstruction in this context would include any obstacle or object that would block, obscure, or interfere with in any way that opening or any access thereto, as viewed from the middle aisle of the bus. For example, the seatback of a nearby seat that protrudes into the area perpendicular to the plane of the opening would constitute such an obstruction. In your second question you referred to the current provisions of S5.2.3.1(b), FMVSS 217, which provides that a left-side emergency door must be located in the rear half of the bus passenger compartment. You then asked whether that requirement was changed in the Final Rule. The answer is yes. S5.2.3.1, as amended in the Final Rule, provides manufacturers two options for the provision of school bus emergency exits, S5.2.3.1(a) (Option A) and S5.2.3.1(b) (Option B). Option A requires a rear emergency door and, in the sequence of choices for providing the additional emergency exit area, the first specifies a left side door that is required by S5.2.3.2(a)(2) to be located at the midpoint of the bus. Option B requires a left-side emergency door and a pushout rear window, but does not designate a specific location for them. Thus, the locations of exits other than the left side door specified in S5.2.3.1(a)(2)(i) are left to the various design options of the manufacturers and their customers. I hope this information will be of assistance to you. Should you have any further questions or seek additional information, please feel free to contact Walter Myers of my staff at this address or at (202) 366-2992. Sincerely, John Womack Acting Chief counsel; |
|
ID: aiam5589OpenMs. Jane L. Dawson Specifications Engineer Thomas Built Buses, Inc. Post Office Box 2450 1408 Courtesy Road High Point, NC 27261; Ms. Jane L. Dawson Specifications Engineer Thomas Built Buses Inc. Post Office Box 2450 1408 Courtesy Road High Point NC 27261; Dear Ms. Dawson: This responds to your letter to Walter Myers of thi office regarding the May 9, 1995, amendment of Federal Motor Vehicle Safety Standard (FMVSS) No. 217, Bus Window Retention and Release. I apologize for the delay in responding. For your future reference, Mr. Myers is no longer assigned to our school bus standards. You may address requests for interpretation directly to me. The May 9 amendment (60 FR 24562) to FMVSS No. 217 permitted, among other things, bus manufacturers to meet the additional emergency exit area (AEEA) requirements of S5.2 by permitting manufacturers to install two emergency exit windows as an alternative to an emergency exit door. You asked what the location requirements (fore and aft) are for the emergency windows that are used as the first additional emergency exit. FMVSS No. 217 contains no explicit fore and aft location requirements for the two additional emergency exit windows. However, the intent of the final rule was to substitute the location requirements of the side exit door when the windows are used to satisfy the requirement for the first additional emergency exit. This intention is reflected in the use of the conjunctive word 'or' in Tables 1 and 2 of the May 9, 1995, amendment. If a left side exit door would have been installed pursuant to S5.2.3.1(a)(2)(i), then S5.2.3.2(a)(2) requires that it be located as near as practicable to the midpoint of the passenger compartment. The same fore-aft location should be used for the windows. In cases where the fore-aft location is not specified, such as a right side exit door installed pursuant to S5.2.3.1(b)(2)(i), then the windows should be placed so as to provide bus passengers with maximum accessibility to an emergency exit, in accordance with what is reasonable and practicable. Also note the explicit location requirement in S5.2.3.2(c) that exit windows be evenly divided between the left and right sides of the bus. For example, if two exit windows are used instead of a left side exit door, they should be placed on opposite sides at the midpoint of the bus. I hope this information will be of assistance to you. Should you have any further questions or seek additional information, please feel free to contact Paul Atelsek at this address or by calling (202) 366-2992. Sincerely, John Womack Acting Chief Counsel; |
|
ID: aiam4675OpenThe Honorable Robert J. Lagomarsino U. S. House of Representatives 2332 Rayburn Building Washington, D.C. 20515; The Honorable Robert J. Lagomarsino U. S. House of Representatives 2332 Rayburn Building Washington D.C. 20515; "Dear Mr. Lagomarsino: Thank you for your letter to Secretary Skinne on behalf of your constituent, Mike Dunn. You inquired about a school bus passenger restraining device marketed by Mr. Dunn. The National Highway Traffic Safety Administration received an inquiry concerning a similar device in 1988. A copy of our responses, which detail the requirements applicable to such a device, are enclosed. I will summarize those requirements below. The device being marketed by your constituent, a 'safety bar' for school bus passengers, consists of a padded metal bar which is attached to the seat back of the seat in front of the seat whose occupants are to be protected by the safety bar. The bar is hinged to swing up to allow entry and exit of the occupants. The hinge mechanism also allows the bar to drop slightly from its lowered position upon impact in an attempt to reduce the likelihood of abdominal injury. The device operates much like the passenger restraint bars found on certain amusement park rides. As explained by the enclosed letters, federal law does not prohibit the installation of your constituent's product on school buses as long its installation and use would not destroy the ability of the required safety systems to comply with the Federal Motor Vehicle Safety Standards (FMVSS). If the safety bars are to be installed in any new school bus, the manufacturer of the bus would have to certify that the bus with the safety bars installed complied with the impact zone requirements set forth in S5.3 of FMVSS No. 222, School bus passenger seating and crash protection (49 CFR Part 571.222). As the enclosed letters explain, the use of the safety bar would not obviate the need for a school bus with a GVWR of 10,000 pounds or less to comply with FMVSS No. 208, Occupant crash protection (49 CFR Part 571.208). That standard requires that such vehicles be equipped with either safety belts or automatic restraints at all passenger seating positions. In addition, as explained in the enclosed letters and information sheet, the manufacturer of the safety bars would be considered a manufacturer of motor vehicle equipment within the meaning of the National Traffic and Motor Vehicle Safety Act (15 U.S.C. 1381 et seq.). Such a manufacturer is responsible for conducting a notification and remedy campaign if the company or this agency decides that the product contains a defect related to motor vehicle safety, or that it does not comply with an applicable safety standard. I hope you have found this information helpful. Please do not hesitate to contact me if you have any further questions. Sincerely, Jerry Ralph Curry Enclosures"; |
|
ID: aiam0775OpenMr. Paul Weirich, General Manager, Weirich Associates, 540 Frontage Road, Northfield, IL 60093; Mr. Paul Weirich General Manager Weirich Associates 540 Frontage Road Northfield IL 60093; Dear Mr. Weirich: Thank you for your letter of July 11, 1972, inquiring about the use o plastic for an automatically closing fuel cap for automobiles.; The National Highway Traffic Safety Administration (NHTSA) has th responsibility for promulgating standards that improve the safety performance of new motor vehicles to minimize injuries and fatalities associated with the use of motor vehicles. Among the standards that have been issued is Federal Motor Vehicle Safety Standard (FMVSS) No. 301, which specifies performance requirements for the fuel tank, fuel tank filler pipe, and fuel tank connections. Like other Federal standards issued by the NHTSA, this standard is performance oriented and does not specify design requirements. This standard will shortly be amended to specify additional performance requirements including rear-end collisions and rollover. In addition, other proposals will also be issued to considerably improve fuel containment to minimize the possibility of fuel spillage resulting from additional vehicle impacts. The essential requirements pertain to demonstrations of safe fuel containment as the result of standardized vehicle crash tests. how the results are to be achieved, what materials can or cannot be used, or other design features, are left to the discretion of the motor vehicle manufacturer in order that there should be the maximum freedom for innovation and inventiveness to meet the specified safety performance. We have no restrictions in the use of plastics or other materials that meet a specified safety performance requirement.; In view of present rulemaking action to amend FMVSS No. 301, there ha been much information assembled, which is part of the public record, concerning comments from manufacturers, the interested public, and from suppliers of components. Your components, including a self-closing fuel cap and a seal within the filler pipe are interesting developments having possible contribution to improved safety. We would be pleased to have more information concerning these developments and with your permission, we would like to have copies of descriptive information to put into our public record, Docket No. 70-20, for the public and for the motor vehicle industry to see.; We should mention also that the Bureau of Motor Carrier Safety, whic regulates interstate commercial transportation of passengers and cargo, has regulations which include fuel caps. you may want to contact this organization for their current requirements. Their location is at the same address of NHTSA.; Relative to pollution, the current requirements for fuel evaporativ emission controls have resulted in motor vehicles being equipped with fuel caps that either have no vents or which vent only after certain stress develops from positive of negative internal tank pressure. You may want to contact the Environmental Protection Agency concerning their regulations. The address is 1626 K Street, N.W., Washington, D.C.; We are enclosing a copy of FMVSS No. 301, a copy of a notice proposin additional requirements, and a copy of Public Law 89-563.; We appreciate your interest in motor vehicle safety. Sincerely, Robert L. Carter, Associate Administrator, Motor Vehicl Programs; |
|
ID: aiam5191OpenMr. Lanny Kness Coach Design Engineer Chance Coach, Inc. 4219 Irving, Box 12328 Wichita, KS 67277-2328; Mr. Lanny Kness Coach Design Engineer Chance Coach Inc. 4219 Irving Box 12328 Wichita KS 67277-2328; "Dear Mr. Kness: This responds to your request for an interpretation o two sections of Federal Motor Vehicle Safety Standard (FMVSS) No. 101, Controls and displays (49 CFR 571.101). You ask whether S5.1 requires a turn signal control to be hand operated. As explained below, the answer is no. You also ask whether S5.3's illumination requirements can be met by two different means: reflected light, and an overhead light. The answer is no. By way of background information, the National Highway Traffic Safety Administration (NHTSA) does not provide approvals of motor vehicles or motor vehicle equipment. Under the National Traffic and Motor Vehicle Safety Act, it is the responsibility of the manufacturer to ensure that its motor vehicles or equipment comply with applicable safety standards. The following represents our opinion based on the facts provided in your letter. Your first question asks whether S5.1 requires a turn signal control to be hand operated. S5.1 specifies location requirements for each control listed in S5.1 'that is furnished.' S5.1 does not require manufacturers to furnish any control, such as a hand-operated turn signal control, or prohibit manufacturers from providing an unlisted control, such as a foot-operated turn signal control. While FMVSS No. 108, Lamps, reflective devices, and associated equipment (49 CFR 571.108) specifies the 'turn signal operating unit' as required equipment, it does not specify that the unit be hand operated. (See S5.1.1 and Table I of FMVSS No. 108.) Your second question asks whether the following proposed method of illuminating the windshield wiper/washer control complies with S5.3.3 of Standard No. 101. You state that the wiper/washer control is located on the dashboard and at night, the 'control knob's identification' can be barely seen from indirect lighting coming from other controls and displays. The wiper washer control would become 'very discernible' by turning on an 'overhead driver's controlled light.' For the following reasons, the above described method of illuminating the wiper/washer control would not comply with Standard No. 101. S5.3.3(a) requires means to be provided to make controls visible to the driver under all driving conditions. S5.3.3(b) states that 'the means' (emphasis added) for providing the required visibility: (1) Shall be adjustable, except as provided in S5.3.3(d), to provide at least two levels of brightness, one of which is barely discernible to a driver who has adapted to dark ambient roadway conditions. S5.3.3(b) therefore requires that a single control (i.e., 'the means') be adjustable to provide at least two levels of brightness. Under your proposal, however, two different means must be used to provide two levels of brightness. The overhead driver's light would provide one level of brightness, that makes the control 'very discernible.' The other level of brightness (one barely discernible to the driver) is provided from reflected light given off by other controls and displays located on the dashboard. Since no single 'means' that you propose for illumination would be adjustable to provide at least two levels of brightness, your proposal would not comply with S5.3.3 of Standard No. 101. I hope that this information is useful. If you have any further questions, please contact Dorothy Nakama of my staff at (202) 366-2992. Sincerely, John Womack Acting Chief Counsel"; |
Request an Interpretation
You may email your request to Interpretations.NHTSA@dot.gov or send your request in hard copy to:
The Chief Counsel
National Highway Traffic Safety Administration, W41-326
U.S. Department of Transportation
1200 New Jersey Avenue SE
Washington, DC 20590
If you want to talk to someone at NHTSA about what a request for interpretation should include, call the Office of the Chief Counsel at 202-366-2992.
Please note that NHTSA’s response will be made available in this online database, and that the incoming interpretation request may also be made publicly available.