Federal Motor Vehicle Safety Standard 138: Difference between revisions
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Latest revision as of 22:08, 2 May 2024
This article was nominated for deletion. The discussion was closed on 2 May 2024 with a consensus to merge the content into the article Tire-pressure monitoring system. If you find that such action has not been taken promptly, please consider assisting in the merger instead of re-nominating the article for deletion. To discuss the merger, please use the destination article's talk page. (May 2024) |
Federal Motor Vehicle Safety Standard 138 (FMVSS 138) regulates motor vehicle tire-pressure monitoring system (TPMS) in the United States.
Background[edit]
The dangers of low tire pressure became more prominent following the Firestone and Ford tire controversy which led to the passing of the TREAD Act and the codification of FMVSS 138.
Like all other Federal Motor Vehicle Safety Standards, FMVSS 138 is administered by the United States Department of Transportation's National Highway Traffic Safety Administration.
The standard is to warn drivers of significant under-inflation of tires and the resulting safety problems of low tire pressure.[1]
This standard requires a tire-pressure monitoring system (TPMS) to be installed in all new passenger cars, multipurpose passenger vehicles, trucks, and buses that have a gross vehicle weight rating (GVWR) of 4,536 kg (10,000 lbs.) or less, except those vehicles with dual wheels on an axle. The final rule requires that the driver be given a warning when tire pressure is 25 percent or more below the vehicle manufacturer's recommended cold tire inflation pressure (placard pressure) for one to four tires.[2]
The standard became effective October 7, 2005 however voluntary compliance was allowed prior to this date.
Phase-in schedule[edit]
Primary phase-in schedule | ||||
---|---|---|---|---|
Phase-in year | Produced after August 31 | Produced before September 1 | % of manufacturer's vehicles certified to standard | |
1 | 2005[a] | 2006 | 20 | |
2 | 2006 | 2007 | 70 | |
3 | 2007 | 100 |
See also[edit]
Notes[edit]
References[edit]
- ^ "49 CFR § 571.138 - Standard No. 138; Tire pressure monitoring systems". LII / Legal Information Institute.
- ^ "Tire pressure monitoring system" (PDF). nhtsa.gov.
- ^ "Federal Motor Vehicle Safety Standards; Tire Pressure Monitoring Systems". Federal Register. September 7, 2005. Retrieved August 20, 2023.