Type of motor vehicle | Service brake systems | Emergency brake systems | ||
Braking force as a percentage of gross vehicle or combination weight | Deceleration in feet per second per second | Application and braking distance in feet from initial speed at 20 mph | Application and braking distance in feet from initial speed of 20 mph | |
A. Passenger-carrying vehicles: | ||||
(1) Vehicles with a seating capacity of 10 persons or less, including driver, and built on a passenger car chassis | 65.2 | 21 | 20 | 54 |
(2) Vehicles with a seating capacity of more than 10 persons, including driver, and built on a passenger car chassis; vehicles built on a truck or bus chassis and having a manufacturer's GVWR of 10,000 pounds or less | 52.8 | 17 | 25 | 66 |
(3) All other passenger-carrying vehicles | 43.5 | 14 | 35 | 85 |
B. Property-carrying vehicles: | ||||
(1) Single unit vehicles having a manufacturer's GVWR of 10,000 pounds or less | 52.8 | 17 | 25 | 66 |
(2) Single unit vehicles having a manufacturer's GVWR of more than 10,000 pounds, except truck tractors. Combinations of a 2-axle towing vehicle and trailer having a GVWR of 3,000 pounds or less. All combinations of 2 or less vehicles in drive-away or tow-away operation | 43.5 | 14 | 35 | 85 |
(3) All other property-carrying vehicles and combinations of property-carrying vehicles | 43.5 | 14 | 40 | 90 |
Notes:
49 C.F.R. §393.52