DOT Proposing Speed Limiters For Large Commercial Vehicles


The Department of Transport’s (DOT)  National Highway Traffic Safety Administration (NHTSA) and Federal Motor Carrier Safety Administration (FMCSA) are proposing equipping heavy-duty vehicles with devices that limit their speeds on U.S. roadways, and requiring those devices be set to a maximum speed – a safety measure that could save lives and more than $1 billion in fuel costs each year.

The Department’s proposal would establish safety standards requiring all newly manufactured U.S. trucks, buses, and multipurpose passenger vehicles with a gross vehicle weight rating more than 26,000 pounds to come equipped with speed limiting devices.

The proposal discusses the benefits of setting the maximum speed at 60, 65, and 68 miles per hour, but the Agencies will consider other speeds based on public input.

Motor carriers operating commercial vehicles in interstate commerce would be responsible for maintaining the speed limiting devices at or below the designated speed for the service life of the vehicle under the proposal. While the maximum set travel speed will be determined in the final rule, estimates included in the proposal demonstrate that limiting heavy vehicles will save lives.

Requiring speed limiting devices could also save an estimated $1.1 billion in fuel costs and millions of gallons of fuel annually.