Skip to main content

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

NHTSA's Interpretation Files Search



Displaying 3811 - 3820 of 16517
Interpretations Date

ID: aiam1278

Open
Mr. Donald Gary Hayes, Robertson Tank Lines Inc., P. O. Box 1505, Houston, TX 77001; Mr. Donald Gary Hayes
Robertson Tank Lines Inc.
P. O. Box 1505
Houston
TX 77001;

Dear Mr. Hayes: This is in reply to your letter of August 30, 1973, requesting a DO code number for retreaded tires you manufacture. It appears from your letter that the tires you retread are truck tires intended solely for your company's own use.; Any tires retreaded by and solely for use by Robertson Tank Lines ar exempt from NHTSA recordkeeping requirements and a code number is not required. As truck retreads are not subject to any Federal motor vehicle safety standard, you are also not required to place a 'DOT' symbol on them. If you retread passenger car tires, however, you are required to place a 'DOT' symbol on the tire sidewall (indicating conformity to Federal Motor Vehicle Safety Standard No. 117).; Yours truly, Richard B. Dyson, Assistant Chief Counsel

ID: aiam4580

Open
Ms. Juanita P. Davison 1516 E. Hernandez Street Pensacola, FL 32503; Ms. Juanita P. Davison 1516 E. Hernandez Street Pensacola
FL 32503;

"Dear Ms. Davison: Thank you for your letter describing you impressions of the automatic safety belts on your 1987 Toyota. I apologize for the delay in this reply. You said that this motorized automatic belt system 'takes away the roominess of the front,' because it is in the way when getting in the car with a handbag or package and that it is cumbersome to get out of the belt system. I am pleased to have this opportunity to explain our law and regulations to you. Before I respond to your specific concerns, I would like to give you some background information on our requirement for automatic occupant protection systems in new cars. Pursuant to the National Traffic and Motor Vehicle Safety Act in 1966 (the Safety Act, 15 U.S.C. 1381 et seq.), a Federal safety standard on occupant crash protection was issued in 1967 requiring the installation of manual safety belts in all new passenger vehicles. Although these manual safety belts showed their effectiveness as safety devices, only a relatively small number of motorists used their manual belts. As recently as 1984, only 12.5 percent of front seat occupants wore their manual belts. Because so few people used their manual safety belts, the Department issued the first requirement for automatic restraints in passenger cars in 1970, and it was scheduled to take effect in 1973. That implementation date was delayed for a variety of reasons. On June 24, 1983, the Supreme Court of the United States found our decision to repeal the requirement for automatic restraints was 'arbitrary and capricious,' and ordered us to reconsider the decision (Motor Vehicle Manufacturers Association v. State Farm Mutual Automobile Insurance Co., 463 U.S. 29). Against this background, former Secretary of Transportation Dole issued a final rule amending the Federal safety standard on occupant crash protection on July 17, 1984. That decision, which promotes both automatic restraints and State safety belt use laws, provides a comprehensive approach designed to save as many lives as possible as quickly as possible. We believe that effectively enforced State laws requiring the proper use of the manual safety belts that are in most cars on the road today offer our best opportunity to save lives at virtually no cost to the consumer. The decision also reflects our belief in the value of automatic occupant protection systems, such as air bags and automatic belts, by requiring all new cars to have automatic protection starting with the 1990 model year. The decision required further that automatic protection be phased in during the three years preceding that model year. Each manufacturer was required to equip 10 percent of its model year 1987 cars with automatic restraints. That percentage rose to 25 percent for model year 1988, and 40 percent for model year 1989. However, if the Secretary determines not later than April 1, l989, that State belt use laws have been enacted that meet certain criteria and that are applicable to two-thirds of the U.S. population, then the automatic restraint requirements will be rescinded. You had three specific concerns with your automatic belt system. First, you asked if the motorized automatic belt system in your car was installed to meet some safety regulation. The answer is yes. As explained above, our Standard No. 208, Occupant Crash Protection requires all 1990 model year cars to be equipped with automatic occupant crash protection. Please note that this requirement permits manufacturers to install any automatic occupant protection technology that meets the occupant protection requirements set forth in Standard No. 208. Thus, manufacturers may choose to install motorized, or nonmotorized, automatic safety belts, air bags, other technologies such as 'passive interiors,' or any combination of these technologies. Your second question was whether you can legally disengage the motorized mechanism on the automatic belts in your car. Section 108 of the Safety Act provides that: 'No manufacturer, distributor, dealer, or motor vehicle repair business shall knowingly render inoperative ... any device or element of design installed on or in a motor vehicle ... in compliance with an applicable Federal motor vehicle safety standard ...' In this case, the automatic belts in your car are a 'device or element of design installed in a motor vehicle in compliance with a Federal motor vehicle safety standard.' Disengaging the motorized mechanism would render the automatic belts inoperative. Therefore, Federal law prohibits Toyota, any other manufacturer, and any distributor, dealer, or repair shop from disengaging the motorized mechanism on your automatic belts. Please note that this Federal prohibition does not prevent you, yourself, from disengaging the motorized mechanism on your automatic belts. However, each of the individual States has the authority to regulate the modifications that may be made to vehicles by their owners and to establish requirements for vehicles to be registered or operated in that State. You may wish to contact the State of Florida to learn if they have exercised their authority to prohibit the disabling of automatic belts. Even if neither Federal nor State law prohibits you from disabling your automatic belt, we encourage vehicle owners not to tamper with the occupant crash protection systems installed in their vehicles. If you were to improperly disengage the motorized mechanism, you would put yourself, other occupants of your car and subsequent owners and users of the car at substantially greater risk of injury in a crash. Third and finally, you said that you have been told it is not safe to wear your automatic belts without also fastening the manual lap belt, because of the possibility of choking. The manual lap belt was voluntarily provided by the manufacturer of your car to provide an even higher level of crash protection for those occupants who choose to use the lap belt. However, the manufacturer of your car has certified that, in a 30 mph frontal crash into a concrete barrier, a test dummy restrained only by the automatic belt in your car would not experience injury-producing forces in excess of the levels specified in Standard No. 208. Hence, the suggestion that the automatic belt by itself is somehow unsafe is simply not true. I would like to thank you for taking the time to express your views on this subject. We welcome the interest of all concerned citizens on this important question and appreciate this opportunity to advise you of our efforts to improve occupant crash protection for all Americans. Sincerely, Erika Z. Jones Chief Counsel ";

ID: aiam0039

Open
Mr. C. F. Talbot, Vice President and Assistant Secretary, McIntosh, Inc., 13881 Himira Avenue, Detroit, MI 48227; Mr. C. F. Talbot
Vice President and Assistant Secretary
McIntosh
Inc.
13881 Himira Avenue
Detroit
MI 48227;

Dear Mr. Talbot: Thank you for your letter of November 3, 1967, to Mr. Lowell K Bridwell, requesting clarification on certain aspects of the Motor Vehicle Safety Act.; In answer to your specific questions, please be advised that th supplier of a component of a motor vehicle is a manufacturer within the meaning of the Motor Vehicle Safety Act. However, he is not obligated to certify that the item of motor vehicle equipment he manufacturers complies with the standard unless he is supplying that item to a distributor or dealer, and then only if there is an applicable Federal Standard.; As regards identification of parts, there is no specific requiremen under the Act.; With reference to the entire matter of keeping of records under Sectio 112(c), this Bureau has under study an appropriate program based on evaluation of certification experience during the next few months that will load to specific regulations. It is contemplated that these regulations will have an effective date of January 1, 1969.; If there is any other information you would like, I hope you will le me know.; Sincerely, William Haddon, Jr., M.D., Director

ID: aiam2004

Open
Mr. John R. Hudson, 1303 Merry Lane, La Marque, TX 77568; Mr. John R. Hudson
1303 Merry Lane
La Marque
TX 77568;

Dear Mr. Hudson: This is in reference to your letter of July 28, 1975, to Corbusie Chevrolet Company of Bryan, Texas concerning that dealer's failure to provide you with an odometer mileage disclosure statement.; As you know, the Motor Vehicle Information and Cost Savings Act (Pub L. 92-513) requires that a written disclosure of a vehicle's correct mileage be provided by the seller to the purchaser at the time ownership of a vehicle is transferred. If the correct mileage is unknown, the Act requires a statement to that effect to be furnished in written form to the buyer. This requirement is not limited to transactions where a dealer is the purchaser. It applies to all type of vehicle transfers, including the one in which you were involved.; In addition, the Act prohibits the alteration of the mileage indicate on an odometer. Violation of this provision and/or the disclosure statement provision may subject the violator to civil liability where his actions were intended to defraud the purchaser. The Act makes available to the buyer a remedy in the amount of $1,500 or treble damages whichever is greater. To obtain this remedy, section 409 of the Act provides that a private civil action be instituted in State or Federal court.; We have mailed a letter to Corbusier Chevrolet informing them of th relevant odometer law requirements (copy enclosed). If they fail to disclose the necessary mileage information, please let us know so that we may take additional steps to enforce their compliance with the law.; Sincerely, Frank Berndt, Acting Chief Counsel

ID: aiam4979

Open
Mr. Neil Friedkin Attorney at Law 325 Exterior Street Bronx, NY 10451; Mr. Neil Friedkin Attorney at Law 325 Exterior Street Bronx
NY 10451;

"Dear Mr. Friedkin: This responds to your letter asking about th certification of a converted vehicle. You explained that your client leased a 1986 Mercedes and that as part of the lease agreement, Coachbuilders Ltd converted the vehicle from a hardtop to a convertible. In a pending lawsuit, your client is alleging that Coachbuilders did not recertify the vehicle after conversion and that the conversion did not conform with the National Traffic and Motor Vehicle Safety Act ('Safety Act,' 15 U.S.C. 1381). You asked the agency to explain our regulations about conversion and recertification. I am pleased to have this opportunity to do so. The agency's certification regulation requires the manufacturer of a new vehicle to certify that the vehicle conforms to all applicable safety standards in effect on the date of manufacture (567.4 and 567.5). Persons that alter certified vehicles before the first purchase of the vehicle in good faith for purposes other than resale are required to allow the original certification label to remain in place and to add an additional label stating that the vehicle as altered continues to conform to all applicable standards (567.7). Once a vehicle is purchased for purposes other than resale, there is no requirement for an alterer to certify the vehicle's compliance with the standards. The Safety Act, in 114, requires manufacturers and distributors of motor vehicles to certify the vehicles' compliance, but does not extend this requirement to other persons. The Safety Act further provides, in 108(b)(1), that the requirement for a vehicle to comply with all applicable safety standards does not apply after the first purchase for purposes other than resale. In this case, we would consider the purchase by the leasing company to be the first purchase of the vehicle for purposes other than resale. If the modifications were made before that purchase, the modifier would have been required by 567.7 to certify that the altered vehicle continued to conform with the applicable safety standards. If, however, the modifications were made after the leasing company had purchased the vehicle, the modifier would not have been required to make any certification that the modified vehicle continued to conform to all applicable safety standards. If modifications were made after the leasing company purchased the vehicle, the only provision of Federal law that would apply would be section 108(a)(2)(A) of the Safety Act. That section provides in relevant part that: No manufacturer, distributor, dealer, or motor vehicle repair business shall knowingly render inoperative, in whole or in part, any device or element of design installed on or in a motor vehicle ... in compliance with an applicable Federal motor vehicle safety standard. In general, this section prohibits any manufacturer, dealer, distributor, or repair shop from removing, disabling, or otherwise 'rendering inoperative' any of the safety systems or devices installed on the vehicle to comply with a safety standard. However, modifications that change a vehicle from one vehicle type to another (e.g., from a hard-top to a convertible) do not violate the 'render inoperative' prohibition, as long as the converted vehicle complies with those safety standards that would have applied if the vehicle had been originally manufactured as the new type. In the case of your client's 1986 Mercedes, there would be no violation of the 'render inoperative' prohibition if the car, as modified, complied with those standards that were applicable to 1986 convertible passenger cars. I hope this information is helpful. If you have any further questions about NHTSA's safety standards, please feel free to contact Marvin Shaw of my staff at this address or by telephone at (202) 366-2992. Sincerely, Paul Jackson Rice Chief Counsel";

ID: aiam0193

Open
Mr. David A. Phelps, Jr., Engineering Services, Blue Bird Body Company, Fort Valley, GA 31030; Mr. David A. Phelps
Jr.
Engineering Services
Blue Bird Body Company
Fort Valley
GA 31030;

Dear Mr. Phelps: Thank you for your letter of December 9, 1969, providing additiona information on the school bus lighting system as described in your previous letter of November 14, 1969.; Paragraph S3.1.2 of Federal Motor Vehicle Safety Standard No. 10 specifies that, 'No additional lamp, reflective device, and associated equipment shall be installed if it impairs the effectiveness of the required equipment.' The system of front stop lamps as described in your letters, i.e., two non-flashing amber lamps of the same size as and located in line with the two red school bus signal lamps, and actuated by the foot brake only, would not appear to impair the effectiveness of the lighting equipment required by Standard No. 108. It should be noted, however, that, while incorporation of this system in school buses would not be precluded by Standard No. 108, the various States may interpose restrictions as to such system. I would suggest, therefore, that you review the applicable State regulations before initiating installation of the system.; Sincerely, Charles A. Baker, Office of Standards on Accident Avoidance Motor Vehicle Safety Performance Service;

ID: aiam0469

Open
Mr. Fredrick A. Stewart, Vice President, Safety and Quality Assurance, American Motors Corporation, 14250 Plymouth Road, Detroit, MI 48232; Mr. Fredrick A. Stewart
Vice President
Safety and Quality Assurance
American Motors Corporation
14250 Plymouth Road
Detroit
MI 48232;

Dear Mr. Stewart: This is in response to your recent telephone inquiry as to whether th recent amendment of Standard 215, Exterior Protection, requires that vehicles meet the photometric requirements of Standard 108 after being subjected to the Standard 215 impacts.; S5.3.1 of Standard 215 reads: >>>'Each lamp or reflective device, except license plate lamps, shal be free of cracks and shall comply with the applicable requirements of Motor Vehicle Safety Standard No. 108.'<<<; S4.3.1.1 of Standard 108 reads in relevant part: >>>'Each lamp and reflective device shall be located so that it meet the visibility requirements specified in any applicable SAE Standard or Recommended Practice. *In addition, no part of the vehicle shall prevent the device from meeting the photometric output at any test point specified* in any applicable SAE Standard or Recommended Practice.'<<< (Emphasis supplied.); Thus, although the actual photometric tests may be considered 'benc tests', that is, tests whose procedures include removing the devices from the vehicle, the above provision of Standard 108 requires that the configuration of the vehicle external to the devices not prevent them from meeting the photometric requirements. The test procedures themselves require the devices to be placed in their actual orientation on the vehicle. Therefore, the provision in Standard 215 that the lamps and reflective devices shall meet all the requirements of Standard 108 after the impacts includes the photometric requirements.; Sincerely, Robert L. Carter, Acting Associate Administrator, Moto Vehicle Programs;

ID: aiam5391

Open
Mr. John A. Griffiths 510G Bellfield Drive Newport News, VA 23602; Mr. John A. Griffiths 510G Bellfield Drive Newport News
VA 23602;

Dear Mr. Griffiths: This responds to your request for an interpretatio whether the Federal Motor Vehicle Safety Standards specify for a manual transmission vehicle, a 'neutral safety switch,' or other means to prevent starting of the vehicle unless the clutch is fully depressed. The answer is no. Standard No. 102, Transmission shift lever sequence, starter interlock, and transmission braking effect, specifies starter interlocks for automatic transmission vehicles, but not for manual transmission vehicles. (See S3.1.3.) None of the other safety standards specify that motor vehicles include a device of the type you describe, or specify means to prevent starting of a manual transmission vehicle unless the clutch is depressed. 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;

ID: aiam2454

Open
Mr. Rex R. Redhair, Shughart, Thomson and Kilroy, 922 Walnut Street, P. O. Box 13007, (sic); Mr. Rex R. Redhair
Shughart
Thomson and Kilroy
922 Walnut Street
P. O. Box 13007
(sic);

Dear Mr. Redhair: Your October 20, 1976, letter to the U.S. Department of Transportation Federal Highway Administration, has been referred to this office for reply.; You request data concerning the 10.00-02 'Inland Deep Drive 300,' tha was manufactured by the Mansfield Tire and Rubber Company, Mansfield, OH. Tire Identification Number WLZJAVN 503.; We have enclosed all the Federal Motor Vehicle Safety Standards for: >>>o New Pneumatic Tires, Passenger Cars, Federal Motor Vehicle Safet Standard No. 109; o New Pneumatic Tires for Vehicles Other Than Passenger Cars, Federa Motor Vehicle Safety Standard No. 119; o Part 574 - Tire Identification and Recordkeeping o Tire Code Numbers Assigned New Tire Manufacturers. o Tire Size Codes<<< The tire identification number stated in your letter can be explaine by the use of the above data.; >>>'WL' - is the plant code for the Mansfield, Ohio plant. 'ZJ' - is the tire size code for the 10.00-20 tire size designation. 'AVN' - is an internal code for Mansfield. '503' - means the tire was cured the 50th week of 1973.<<< You also request design and construction information. We do not hav this type of information because it is proprietary. Also enclosed are copies of tire 'Care and Service of Bias and Radial Ply Truck Tires.'; We hope the above has been of some help to you. Sincerely, E. T. Driver, Director, Office of Crash Avoidance, Moto Vehicle Programs;

ID: aiam4996

Open
Ms. Eileen Mathews Industry Manager, Hose and Tubing General Electric Company 2 Summit Park Dr. Suite 410 Independence, OH 44131; Ms. Eileen Mathews Industry Manager
Hose and Tubing General Electric Company 2 Summit Park Dr. Suite 410 Independence
OH 44131;

"Dear Ms. Mathews: This concerns your letter to the Federal Highwa Administration (FHWA) asking about FHWA's regulation 393.45 (49 CFR 393.45) and NHTSA's Federal Motor Vehicle Safety Standard No. 106, Brake Hoses. FHWA provided us a copy of its March 6, 1992 response on regulation 393.45. This letter answers your question about Standard 106. You ask about S7.3.6, 7.3.10 and 7.3.11 of the standard. Those sections set forth performance requirements for limiting the amount a hose may change in length under specified conditions (S7.3.6), for the tensile strength of a hose assembly (S7.3.10), and for the tensile strength of an assembly after immersion in water (S7.3.11). Each of these sections excludes certain items from the requirement. Your question relates to those exclusions. S7.3.6 excludes coiled nylon tubes for use in assemblies that meet the FHWA requirements of 393.45. S7.3.10 excludes coiled nylon tube assemblies that meet 393.45. S7.3.11 excludes coiled tube assemblies that meet 393.45. You ask whether those exclusions in S7.3.6, 7.3.10 and 7.3.11 'require compliance with 393.45.' The answer is no. Standard 106 does not require tubing to meet 393.45. Instead, compliance with 393.45 is a condition for excluding the item from S7.3.6, 7.3.10 or 7.3.11. The other condition, relevant for S7.3.6 and 7.3.10, is that the brake hose be coiled nylon tubing. According to your letter, the brake hose (tubing) of your concern would be made from a material other than nylon. Since the second condition would not be satisfied, such hose would not qualify for the S7.3.6 exception, and an assembly made from such hose would not qualify for the 7.3.10 exception, regardless of whether the hose meets regulation 393.45. Thus, S7.3.6 and 7.3.10 would apply to hose and assemblies made from your product, without exception. S7.3.11 does not specify that the coiled tubing must be nylon to qualify for the exception. While NHTSA intended to specify nylon (see, preamble to rule adopting the exclusion, 39 FR 28436, August 7, 1974), as adopted, S7.3.11 excludes a 'coiled tube assembly' that meets regulation 393.45 from its requirements. I hope this information is helpful. If you have any further questions, please contact Deirdre Fujita of my staff at (202) 366-2992. Sincerely, Paul Jackson Rice Chief Counsel";

Go to top of page