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 |
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ID: nht94-4.45OpenTYPE: INTERPRETATION-NHTSA DATE: October 4, 1994 FROM: Larry W. Overbay -- Director, Automotive and Support Equipment Directorate, U.S. Dept. of The Army TO: John Womack -- NHTSA TITLE: None ATTACHMT: ATTACHED TO 2/17/95 LETTER FROM PHILIP R. RECHT TO LARRY W. OVERBAY (A43; STD. 121) TEXT: We are requesting a National Highway Traffic Safety Administration (NHSTA) written response to several questions we have concerning the Federal Motor Vehicle Safety Standard (FMVSS) No. 121 and NHSTA Test Procedure TP 121-02. These questions were discuss ed in a telephone conversation between Mr. Dwayne Perrin, NHSTA, and Mr. Richard Kimball, this office, on September 19, 1994. U.S. Army Combat Systems Test Activity (CSTA) is a test agency for the U.S. Army Test and Evaluation Command (TECOM). One of the missions of CSTA is to test developmental tactical vehicles. Recently we were requested by U.S. Army Tank-Automotive Com mand (TACOM) to test for a vehicle manufacturer's compliance to FMVSS No. 121. The vehicle under test is one variant of the Family of Medium Tactical Vehicles (FMTV). The vehicle is a three axle truck with a five ton payload capacity and a GVW of 32,000 lbs. According to our test results, the vehicle fails to conform to the re quired emergency, stopping distances. Our test procedures for assessing the performance of the emergency stopping distances involved disconnecting the service air signal line at the rear service air relay. A pneumatic system schematic is provided as an enclosure. This essentially eliminated rear braking during all stops. The vehicle then became totally reliant on the front brakes for stopping. Preliminary results were reported to TACOM who queried the manufacturer about their nonconformance. The response from the manufacturer stated that the test was invalid since the testing had not been conducted in accordance with the NHTSA Test Procedu re TP 121-02, which recommends rapid bleeding of the vehicle's air reservoirs. TACOM requested CSTA to solicit a NHTSA position on the issue. We therefore request your position on the following: a. Is the NHTSA Test Procedure TP 121-02 the governing document for single point failure testing or does FMVSS No. 121 take precedence? b. What is the intended purpose of the NHTSA Test Procedure TP 121-02? C. Does NHTSA consider the removal of the service air signal line (a non-manifolded line which is designed to carry compressed air) from the rear air brake relay valve a valid test of the emergency system requirements under the provisions in FMVSS No . 121. Due to test schedule constraints, a response within 60 days is requested. We look forward to your reply. The points of contact for our organization are Mr. Richard B. Kimball or Roger C. Link, (410) 278-5152 and (410) 278-4857, respectively. |
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ID: 09-008774 223OpenMr. S. Lafferty Manager, Engineering Maxon 10321 Greenleaf Avenue Santa Fe Springs, CA 90760 Dear Mr. Lafferty: This responds to your letter asking about Federal Motor Vehicle Safety Standard (FMVSS) No. 223, Rear impact guards, and No. 224, Rear impact protection. Specifically, you ask whether the horizontal member of a rear impact guard may be composed of multiple pieces, as long as the guard passes the requirements of FMVSS No. 223 and FMVSS No. 224. Our answer is yes. By way of background, the National Highway Traffic Safety Administration (NHTSA) is authorized to issue FMVSSs that set performance requirements for new motor vehicles and items of motor vehicle equipment (see 49 U.S.C. Chapter 301). NHTSA does not provide approvals of motor vehicles or motor vehicle equipment. Instead, manufacturers are required to self-certify that their products conform to all applicable safety standards that are in effect on the date of manufacture. NHTSA selects a sampling of new vehicles and equipment each year to determine their compliance with applicable FMVSSs. If our testing or examination reveals an apparent noncompliance, we may require the manufacturer to remedy the noncompliance, and may initiate an enforcement proceeding if necessary to ensure that the manufacturer takes appropriate action. NHTSA also investigates safety-related defects. The following is our interpretation of the FMVSSs based on the description in your letter. FMVSS No. 223 applies to rear impact guards as items of motor vehicle equipment. Nothing in the standard requires the horizontal member to be composed of a single piece. S5.1 of the standard specifies that the horizontal member of each guard, when viewed from the rear as it would be installed on a trailershall have a vertical height of at least 100 [millimeters (mm)] at each point across the guard width. If your guard is composed of multiple pieces, each horizontal member must have a vertical height of at least 100 mm at each point. S5.2 of the standard specifies strength and energy absorption requirements at test locations P1, P2, and P3. As long as your guard meets S5.2 at P1, P2, and P3 when tested according to S6 of the standard, the horizontal member may be composed of multiple pieces. FMVSS No. 224 applies to trailers and semitrailers with a gross vehicle weight rating of 10,000 pounds or more. This standard requires the vehicles to be equipped with a rear impact guard that is certified as meeting Standard No. 223. We do not interpret FMVSS No. 224 to require the horizontal member of the guard to be composed of a single piece. If the vehicle can meet the requirements in the standard regarding the guards width, height and rear surface location, the horizontal member of the guard may be composed of multiple pieces. If you have any further questions, please contact Deirdre Fujita of my staff at (202) 366-2992. Sincerely yours,
O. Kevin Vincent Chief Counsel Dated: 5/26/2010 |
2010 |
ID: nht91-3.21OpenDATE: April 15, 1991 FROM: Danny J. Pugh -- Engineering Manager, Special Service Vehicles, Utilimaster Corporation TO: Chief Counsel, NHTSA TITLE: None ATTACHMT: Attached to letter dated 6-10-91 from Paul Jackson Rice to Danny J. Pugh (A38; Std. 206; Std. 207; Std. 208; Std. 210) TEXT: This letter is seeking an interpretation on police vehicle's for the transportation of prisoners and the requirements for safety belts FMVSS 207, 208 and 210 in the prisoner area and door hardware FMVSS 206. Are police vehicle's required to have seatbelts for prisoners?, if so, what type is required (Type I Lap or Type II 3-Point)? Does this also affect side facing seats? To insure that prisoners cannot escape from the vehicle, the police market has requested camlock door hardware on rear and side doors. Does this need to meet FMVSS 206? |
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ID: aiam4870OpenMr. Takeo Wakamatsu Executive Vice President and General Manager Mitsubishi Motors America, Inc. Bridgeport Office 100 Center Square Road P.O. Box 464 Bridgeport, NJ 08014; Mr. Takeo Wakamatsu Executive Vice President and General Manager Mitsubishi Motors America Inc. Bridgeport Office 100 Center Square Road P.O. Box 464 Bridgeport NJ 08014; "Dear Mr. Wakamatsu: This responds to your March 28, 1991, letter t Mr. Scott Shadle of this agency's Rulemaking office, on behalf of Mitsubishi Motors Corporation (MMC) in Japan. MMC requests approval of its plan for 'derating' the gross vehicle weight rating (GVWR) of certain imported trucks for the purpose of marketing strategy. Based on the context of the letter, I presume that you mean that MMC would like to lower the GVWR of the vehicles. The following responds to this request. NHTSA is not authorized by the National Traffic and Motor Vehicle Safety Act to certify or approve motor vehicles or motor vehicle equipment for compliance with the Federal Motor Vehicle Safety Standards (FMVSS). Each manufacturer is responsible for certifying that its products meet all applicable safety standards. The GVWR assigned to a vehicle by its manufacturer affects the vehicle's loading and other test conditions to which the vehicle will be subjected during NHTSA's compliance testing for the vehicle. Generally, NHTSA expects the GVWR to reflect a manufacturer's good-faith evaluation of the vehicle's size, weight, and load carrying capacity. The only regulatory limitation on the GVWR that manufacturers may assign to their vehicles is set forth in 49 CFR Part 567, Certification. Section 567.4(g)(3) provides that the assigned 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.' There is no regulatory prohibition against a manufacturer lowering the GVWR assigned to its vehicles. Of course, the lower GVWR would have to be not less than the minimum GVWR specified in 567.4(g)(3). Further, the certification label on the vehicle would have to show the lowered GVWR as the GVWR assigned to the vehicle. In addition, the manufacturer must reexamine its certification of compliance for the vehicle to ensure that the vehicle continues to comply with all safety standards at this new lower GVWR, and that the vehicle continues to comply with all other NHTSA regulations (such as 49 CFR Part 565, Vehicle Identification Number-Content Requirements) at the lower GVWR. Assuming these conditions would be satisfied, MMC would be permitted to lower the GVWR assigned to these vehicles. I hope that this information is helpful. Please feel free to contact us if you have any further questions. Sincerely, Paul Jackson Rice Chief Counsel"; |
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ID: key-like objectOpenGerald Plante, General Manager Dear Mr. Plante: This responds to your inquiry regarding the definition of "key-like object" in relation to the buckle release requirements in Federal Motor Vehicle Safety Standard (FMVSS) No. 208, Occupant crash protection. Specifically you asked if the tongue from a safety belt buckle would be considered a "key-like object" for purposes of the standard. As explained below, a buckle tongue would conform to the definition of "key-like object" under the system you described. On December 8, 2004, we amended FMVSS No. 208 to require all designated seating positions in rear seats, other than side-facing seats, be equipped with Type 2 integral lap/shoulder safety belts (69 FR 70904). For certain folding and removable seats, the standard permits use of a release mechanism that detaches both the lap and shoulder portion at either the upper or lower anchorage point, but not both (See S4.1.5.5.2, S4.2.7.2, S4.2.7.4, and S4.2.7.5 of FMVSS No. 208). The standard also specifies that detachment must be by means of a "key or key-like object". In a phone conversation with Mr. Chris Calamita of my staff, you asked how the agency defines "key-like object". In a follow-up letter you specifically asked whether a tongue from an adjacent buckle would meet the definition of "key-like object".Your letter described a "release mechanism in which the shoulder belt portion [of a safety belt] is detached by inserting the tongue from another belt into a narrow slot".The photographs you provided illustrate a buckle with a narrow slot on the side that would accept the corner of a tongue from another belt. In specifying the requirement for a "key or key-like object," we were concerned about the potential for inadvertent release of a safety belt. This potential is particularly acute with typical push-button releases, which can be released with the push of a finger. We stated that manufacturers may choose to use the door or ignition key since these keys are always likely to be in the driver's possession when the belt needs to be detached. However, to provide flexibility in design we also permitted use of a "key-like object". The standard does not define "key-like object", but the preamble to the December 2004 final rule notes that a design in which an object must be inserted into a small hole in order to release a latch would comply with the requirement (69 FR 70908). Although your system has a slot as opposed to a hole, it also requires use of an object other than an occupants finger to release the latch. Under your system, a buckle tongue (or similarly shaped object) must be placed in the appropriate slot to release the latch, and therefore functions as a "key-like object". The system you described, therefore, would comply with the "key-like object" requirement in S4.1.5.5.2, S4.2.7.2, S4.2.7.4, and S4.2.7.5 of FMVSS No. 208. If you have any additional questions, please contact Mr. Calamita of my staff at (202) 366-2992. Sincerely, Jacqueline Glassman ref:208 |
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ID: nht89-2.75OpenTYPE: INTERPRETATION-NHTSA DATE: AUGUST 22, 1989 FROM: BARBARA J. KELLEHER-WALSH -- HARTLEY ASSOCIATES INC. TO: DEIRDRE FUJITA -- OFFICE OF CHIEF COUNSEL TITLE: NONE ATTACHMT: ATTACHED TO LETTER DATED 3-2-90 TO GEN. JERRY RALPH CURRY, NHTSA, FROM CONGRESSMAN HENRY J. NOWAK; ALSO ATTACHED TO LETTER DATED 2-20-90 TO HENRY J. NOWAK FROM BARBARA J. KELLEHER-WALSH, HARTLEY ASSOCS. INC., AND LETTER DATED 3-16-90 TO BARBARA J. KELLEHER-WALSH FROM STEPHEN P. WOOD, NHTSA; [REDBOOK A35; STD. 213] TEXT: I am a consultant to Century Products Co. for research, development, testing, and evaluation of child restraint systems. Century Products Co. has designed a sun visor for permanent attachment to the Century Model 580 rear-facing infant restraint system. The purpose of the sun visor is simply to protect the infant from the rays of the sun during travel. This sun visor is constructed of polyester/cotton material with two polyethelene plastic ribs which hold the polyester/cotton material in-place above the infant's head. The forward plastic rib pivots about the shell and the mid rib pivots about the forw ard rib. The visor material is attached to these two stays but not to the restraint system shell itself. The sun visor is designed so that the polyester/cotton material slips over the rear of the infant restraint and is not permanently attached. Mr. Stephen Kratzke, Office of Chief Counsel, has provided me with letters of interpretation concerning sun visors. These letters state that sun visors attached to child restraints recommended for use by children under 20 pounds must comply with Section 5.2.3.2 of Federal Motor Vehicle Safety Standard No. 213 (FMVSS 213) - Child Restraint Systems when tested according to Section 6.1. Subsequent to receiving these letters of interpretation, a sled test was performed with the Century Model 580 infant res traint with the sun visor in place. During the sled test the sun visor folded back into the storage position and did not contact the infant dummy's head. The sled test was performed in accordance with the requirements of FMVSS 213, S6.1, with the excep tion that the sled pulse exceeded the upper bound of the FMVSS 213 acceleration versus time window, thus assuring that this was a more severe test than NHTSA would perform during the annual testing for enforcement of the standard. The purpose of this letter is to request an interpretation of S5.2.3.2 of FMVSS 213 with regard to the Century 580 infant restraint system with sun visor. We request a meeting with you along with members of rulemaking and enforcement on Thursday or Frid ay, August 24 or 25, 1989 to provide you with the restraint system, photographs, test data documenting the sled test conditions, and high speed movies of the test which demonstrate the lack of dummy head contact with the sun visor during the sled test. If you have any questions I can be reached by telephone at (716) 892-6313. Our telefax number is (716) 897-0515. |
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ID: 22492Open Mr. David Dobradenka Dear Mr. Dobradenka: This responds to your request that the National Highway Traffic Safety Administration (NHTSA) provide you with specific information regarding the possibility of certifying your company's sensor mat to the requirements of Federal Motor Vehicle Safety Standard No. 208, Occupant Protection Systems (FMVSS No. 208), as it was amended last year. Automatic suppression is one means of complying with one aspect of the new advanced air bag requirements that were published on May 12, 2000 (65 FR 30680). You specifically request what the procedure is for certification, whether it can be done on a test buck, the "timing" involved, and whether you must pay for the certification. By way of background information, NHTSA is authorized under Title 49, Chapter 301 of the U.S. Code (Motor Vehicle Safety) to issue Federal motor vehicle safety standards that apply to the manufacture and sale of new motor vehicles and new items of motor vehicle equipment. Chapter 301 prohibits any person from manufacturing, introducing into commerce, selling, or importing any new motor vehicle or item of motor vehicle equipment unless the vehicle or equipment item is in conformity with all applicable safety standards. NHTSA does not approve motor vehicles or motor vehicle equipment, nor do we endorse any commercial products. Chapter 301 establishes a "self-certification" process under which each manufacturer is responsible for certifying that its products meet all applicable safety standards. With one exception that is not relevant to your product, FMVSS No. 208 applies only to new vehicles, not to items of individual equipment. Thus, it is the vehicle manufacturer's responsibility to certify compliance with all applicable requirements of FMVSS No. 208. We note that many vehicle manufacturers require their equipment vendors to provide them with data that they can use in certifying their vehicles. This is a contractual obligation between two private parties, and NHTSA does not involve itself in these business arrangements. Because manufacturers are responsible for self-certification, we do not require any payment to the Federal government. Likewise, NHTSA does not require that any particular procedure be followed. However, we purchase vehicles and test whether a certified vehicle complies with the requirements of FMVSS No. 208 by following the test procedure detailed in that regulation. While a manufacturer may certify based on another test procedure, using NHTSA's test procedure is the best way for a manufacturer to ensure that its vehicles comply with all applicable requirements. I hope this addresses all your concerns. For your general information, I am enclosing a copy of NHTSA's white paper on information for new manufacturers of motor vehicles and motor vehicle equipment. Should you have additional questions, please contact Rebecca MacPherson, of my staff, at the above address or at (202)366-2992. Sincerely, John Womack Enclosure |
2001 |
ID: GF003147OpenKenneth M. Bush, Associate Director Dear Mr. Bush: This responds to your letter in which you ask about the procedures the National Highway Traffic Safety Administration (NHTSA) would follow for locating "Point 1" described in S10.1(a) of Federal Motor Vehicle Safety Standard (FMVSS) No. 201, Occupant protection in interior impact. You provide an illustration and two different interpretations of these procedures. By way of background, FMVSS No. 201 requires that vehicles meet certain performance criteria when specific targets in the interior are struck by an instrumented headform representative of a human head. When NHTSA performs compliance testing, it does so in accordance with testing procedures specified in FMVSS No. 201. With respect to targets located on the A-pillar, the agency would perform testing using the target location procedure in S10.1. In order to locate "Point 1" described in your letter, the agency would follow the following procedure described in S10.1(a):
NHTSA locates "Point 1" by measuring inboard, along the nominal vehicle exterior surface, 125 mm from the intersection of "Line 1" and the outermost edge of the roof, with the door open. "Line 1" is established by locating a transverse vertical plane (Plane 1) that is perpendicular to the vehicle longitudinal plane, which contacts the rearmost point of the windshield trim. We note that the outermost edge of the roof is determined with the door open and includes uncompressed weather stripping, rain gutter, or other trim components. NHTSA makes linear measurements following the nominal vehicle surface (as opposed to following each convolution of weather stripping, rain gutter or other trim components). See Laboratory Test Procedure for FMVSS No. 201U (TP-201U-01, April 3, 1998, pages 37 and 38 at www.nhtsa.gov), and the enclosed illustration. In your letter and accompanying illustration, you offer two interpretations for the location of "Point 1." The difference between the two interpretations appears to stem from the location of the outboardmost point on Line 1; i.e., the intersection of Plane 1 and the vehicle exterior surface. As explained above, that intersection is located at the outermost edge of the roof, with the door open. After examining your illustration, we believe that this intersection is marked "point *2." If you have any further questions, please feel free to contact George Feygin of my staff at (202) 366-2992. Sincerely, Jacqueline Glassman Enclosure
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2005 |
ID: nht95-6.1OpenTYPE: INTERPRETATION-NHTSA DATE: August 4, 1995 FROM: John Womack -- Acting Chief Counsel, NHTSA TO: Jim Burgess -- Engineering Manager, Independent Mobility Systems, Inc. TITLE: NONE ATTACHMT: ATTACHED TO 5/18/95 LETTER FROM JIM BURGESS TO WALTER MYERS (OCC 10931) TEXT: Dear Mr. Burgess: This responds to your letter of May 18, 1995 to this office and your telephone conversations with Walter Myers of my staff on June 14 and 27, 1995, concerning an exclusion in Federal Motor Vehicle Safety Standard (FMVSS) No. 206, Door locks and door retention components. The standard excludes from its requirements doors equipped with wheelchair lifts and either a visual or audible alarm system. You state that your company converts minivans into wheelchair accessible vehicles by lowering the floor and adding a wheelchair ramp to the right rear side sliding door area, with an audible and/or visual alarm. The issue you raise is whether FMVSS No. 206's exclusion of wheelchair-equipped doors also excludes a ramp-equipped door. The answer is no. FMVSS No. 206 requires that side doors leading directly into a compartment containing one or more seating positions must conform to the standard. However, paragraph S4 of the standard states: Side doors equipped with wheelchair lifts and which are linked to an alarm system consisting of either a flashing visual signal located in the driver's compartment or an alarm audible to the driver which is activated when the door is open, need not conform to this standard. FMVSS No. 206 was amended to add the wheelchair lift exception by final rule dated March 27, 1985 (50 FR 12029, copy enclosed). The agency's rationale was that when not in use, wheelchair lifts are stowed in a vertical position parallel to and in close proximity to the interior surface of the vehicle door, thus providing a barrier to occupant ejection if the door opened while the vehicle was in motion or in the event of a crash. The alarm requirement was intended to alert the driver to a door that was open on a vehicle that was in motion. While the information you provided us showed that your wheelchair ramp is also stowed in a vertical position parallel to and in close proximity to the door and that you install audible and/or visual alarms for the driver, wheelchair lifts and wheelchair ramps are distinctly different components. Although they serve the same purpose and are similarly configured when in the stowed position, this agency cannot by interpretation say that "lift" includes "ramp." In order to amend the standard to exclude wheelchair ramps as well as lifts, rulemaking action would be required. You may petition this agency to do rulemaking, under 49 CFR Part 552 (copy enclosed). This agency will entertain your petition and decide whether a rulemaking proceeding is appropriate. I hope this information is helpful to you. Should you have any further questions or need any additional information, please feel free to contact Mr. Myers at this address or at (202) 366-2992. |
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ID: nht95-3.77OpenTYPE: INTERPRETATION-NHTSA DATE: August 4, 1995 FROM: John Womack -- Acting Chief Counsel, NHTSA TO: Jim Burgess -- Engineering Manager, Independent Mobility Systems, Inc. TITLE: NONE ATTACHMT: ATTACHED TO 5/18/95 LETTER FROM JIM BURGESS TO WALTER MYERS (OCC 10931) TEXT: Dear Mr. Burgess: This responds to your letter of May 18, 1995 to this office and your telephone conversations with Walter Myers of my staff on June 14 and 27, 1995, concerning an exclusion in Federal Motor Vehicle Safety Standard (FMVSS) No. 206, Door locks and door rete ntion components. The standard excludes from its requirements doors equipped with wheelchair lifts and either a visual or audible alarm system. You state that your company converts minivans into wheelchair accessible vehicles by lowering the floor and adding a wheelchair ramp to the right rear side sliding door area, with an audible and/or visual alarm. The issue you raise is whether FMVSS No. 206's exclusion of wheelchair-equipped doors also excludes a ramp-equipped door. The answer is no. FMVSS No. 206 requires that side doors leading directly into a compartment containing one or more seating positions must conform to the standard. However, paragraph S4 of the standard states: Side doors equipped with wheelchair lifts and which are linked to an alarm system consisting of either a flashing visual signal located in the driver's compartment or an alarm audible to the driver which is activated when the door is open, need not confo rm to this standard. FMVSS No. 206 was amended to add the wheelchair lift exception by final rule dated March 27, 1985 (50 FR 12029, copy enclosed). The agency's rationale was that when not in use, wheelchair lifts are stowed in a vertical position parallel to and in close proximity to the interior surface of the vehicle door, thus providing a barrier to occupant ejection if the door opened while the vehicle was in motion or in the event of a crash. The alarm requirement was intended to alert the driver to a door that was open on a vehicle that was in motion. While the information you provided us showed that your wheelchair ramp is also stowed in a vertical position parallel to and in close proximity to the door and that you install audible and/or visual alarms for the driver, wheelchair lifts and wheelchair ramps are distinctly different components. Although they serve the same purpose and are similarly configured when in the stowed position, this agency cannot by interpretation say that "lift" includes "ramp." In order to amend the standard to exclude whe elchair ramps as well as lifts, rulemaking action would be required. You may petition this agency to do rulemaking, under 49 CFR Part 552 (copy enclosed). This agency will entertain your petition and decide whether a rulemaking proceeding is appropriat e. I hope this information is helpful to you. Should you have any further questions or need any additional information, please feel free to contact Mr. Myers at this address or at (202) 366-2992. |
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.
