Informal Document No. GRRF-56-17 56th GRRF, 20-22 September 2004 Agenda Item 6. Submission by the United States of America for information on the status of rulemaking on tire pressure monitoring systems Tire Pressure Monitoring Systems Notice of - PowerPoint PPT Presentation

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Informal Document No. GRRF-56-17 56th GRRF, 20-22 September 2004 Agenda Item 6. Submission by the United States of America for information on the status of rulemaking on tire pressure monitoring systems Tire Pressure Monitoring Systems Notice of

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Tire Pressure Monitoring Systems Notice of Proposed Rulemaking. 2. Background ... NHTSA sued by Consumer Groups to prevent use of 1-tire 30% under-inflation systems ... – PowerPoint PPT presentation

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Title: Informal Document No. GRRF-56-17 56th GRRF, 20-22 September 2004 Agenda Item 6. Submission by the United States of America for information on the status of rulemaking on tire pressure monitoring systems Tire Pressure Monitoring Systems Notice of


1
Informal Document No. GRRF-56-1756th GRRF,
20-22 September 2004Agenda Item 6.Submission
by the United States of America for information
on the status of rulemaking on tire pressure
monitoring systems Tire Pressure Monitoring
Systems Notice of Proposed Rulemaking

2
Background
  • U.S. Congress mandated a final rule to require a
    warning system in motor vehicles to indicate to
    the operator when a tire is significantly
    under-inflated be completed by November 1, 2001
  • Congress mandated that this rule must take effect
    by November 1, 2003

3
TPMS Notice of Proposed Rulemaking
  • Final Rule published on June 5, 2002
  • NHTSA sued by Consumer Groups to prevent use of
    1-tire 30 under-inflation systems
  • In August 2003, U.S. Court of Appeals invalidated
    final rule and directed the agency to publish a
    new final rule
  • The NPRM is in response to the Court ruling

4
Highlights of the NPRM
  • Proposed requirements are performance-based and
    allows any design based on performance criteria
  • Must detect under-inflation in 1 to 4 tires at
    the greater of 25 percent below placard pressure
    or minimum activation pressure
  • Must provide a warning within 10 minutes of
    under-inflation
  • Must provide a yellow Low pressure warning
    indicator
  • Must provide a yellow Malfunction indicator to
    warn of TPMS malfunction due to incompatible
    tires or other malfunction

5
Other Major Issues Addressed
  • Other Major Issues
  • Replacement tire requirement has been dropped
  • Test course specified
  • Calibration procedures
  • Telltale symbols and color
  • Warning activation within 10 minutes
  • Disablement of TPMS
  • Concerns of small volume manufacturers

6
Effective Dates
  • Proposed phase-in with effective date beginning
  • September 1, 2005 for 50 percent installation
  • September 1, 2006 for 90 percent installation
  • September 1, 2007 for 100 percent installation
  • Therefore, beginning September 1, 2007 all light
    vehicles are required to be equipped with a TPMS.

7
Low Tire Pressure Activation
Tire Type Max. Inflation Pressure (kPa) Min. Activation Pressure (kPa)
P-metric - Standard 240 300 350 140 140 140
P-metric Extra Load 280 340 160 160
LT load range C 350 200
LT load range D 450 260
LT load range E 550 320
8
Summary
  • NPRM published with 60-day comment period.
  • Submit comments to Docket No. 19054 at website
    dms.dot.gov or in writing
  • Agency will review all the comments and decide on
    how to proceed for Final Rule
  • Expect final rule in 2005
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