40 CFR Part 86, Appendix IV to Part 86 - Durability Driving Schedules

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View PDF at GPO Pt. 86, App. IV
Appendix IV to Part 86—Durability Driving Schedules
(a) Durability Driving Schedule for Light-Duty Vehicles and Light-Duty Trucks.
The schedule consists basically of 11 laps of a 3.7 mile course. The basic vehicle speed for each lap is listed below:
Lap Speed miles per hour
1 40
2 30
3 40
4 40
5 35
6 30
7 35
8 45
9 35
10 55
11 70
During each of the first nine laps there are 4 stops with 15 second idle. Normal accelerations and decelerations are used. In addition, there are 5 light decelerations each lap from the base speed to 20 m.p.h. followed by light accelerations to the base speed.
The 10th lap is run at a constant speed of 55 m.p.h.
The 11th lap is begun with a wide open throttle acceleration from stop to 70 m.p.h. A normal deceleration to idle followed by a second wide open throttle acceleration occurs at the midpoint of the lap.
(b) Durability Driving Schedule for Motorcycles. The Durability Driving Schedule for Class III Motorcycles may be used for Light-Duty Vehicles and Light-Duty Trucks.
The schedule consists basically of 11 laps of a 6.0 km (3.7 mi) course. The basic vehicle speed for each lap is listed below:
Speed (kilometers per hour)
Lap Class I Class II Class III
1 65 65 65
2 45 45 65
3 65 65 55
4 65 65 45
5 55 55 55
6 45 45 55
7 55 55 70
8 70 70 55
9 55 55 46
10 70 90 90
11 70 90 110
During each of the first nine laps there are 4 stops with 15 second idle. Normal accelerations and decelerations are used. In addition, there are 5 light declerations each lap from the base speed to 30 km/h followed by light accelerations to the base speed.
The 10th lap is run at a constant speed.
The 11th lap is begun with a wide open throttle acceleration from stop. A normal deceleration to idle followed by a second wide open throttle acceleration occurs at the midpoint of the lap.
This schedule may be modified with the advance approval of the Administrator if it results in unsafe operation of the vehicle.
[42 FR 33002, June 28, 1977]

Title 40 published on 2013-07-01

The following are only the Rules published in the Federal Register after the published date of Title 40.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2014-04-28; vol. 79 # 81 - Monday, April 28, 2014
    1. 79 FR 23414 - Control of Air Pollution From Motor Vehicles: Tier 3 Motor Vehicle Emission and Fuel Standards
      GPO FDSys XML | Text
      ENVIRONMENTAL PROTECTION AGENCY
      Final rule.
      This final rule is effective on June 27, 2014. The incorporation by reference of certain publications listed in this regulation is approved by the Director of the Federal Register as of June 27, 2014.
      40 CFR Parts 79, 80, 85, 86, 600, 1036, 1037, 1039, 1042, 1048, 1054, 1065, and 1066

Title 40 published on 2013-07-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR 86 after this date.

  • 2014-04-28; vol. 79 # 81 - Monday, April 28, 2014
    1. 79 FR 23414 - Control of Air Pollution From Motor Vehicles: Tier 3 Motor Vehicle Emission and Fuel Standards
      GPO FDSys XML | Text
      ENVIRONMENTAL PROTECTION AGENCY
      Final rule.
      This final rule is effective on June 27, 2014. The incorporation by reference of certain publications listed in this regulation is approved by the Director of the Federal Register as of June 27, 2014.
      40 CFR Parts 79, 80, 85, 86, 600, 1036, 1037, 1039, 1042, 1048, 1054, 1065, and 1066