Truck Safety Regulations Quiz

At what distance must warning flags, flares, and other approved warning devices be visible?

On a two-lane roadway, what is the maximum legal speed limit for trucks with a gross weight of 8,000 pounds or more?

What is the maximum width for most vehicles?

What is the maximum weight for a single axle?

What is the maximum weight for a tandem axle?

What is the maximum weight for a five axle combination?

What is the lighting equipment required for a second division or combination vehicle longer than 25 feet or wider than 80 inches?

What are the requirements of reducing weight on overweight vehicles?

What is the proper method of braking on long, downhill grades?

What is the maximum height, including load, for all vehicles?

What are the laws that apply to one vehicle towing another?

What is the maximum length for second division vehicles, loaded or unloaded?

Warning Devices

Warning flags, flares, and approved warnings must be visible from a distance of 500 feet.

Truck Speed Limits

Maximum legal speed limit for trucks over 8,000 pounds on a two-lane roadway is 70 mph.

Vehicle Dimensions

Maximum width for most vehicles is 8 feet.
Maximum height for all vehicles, including loads, is 13 feet 6 inches.

Weight Limits

Maximum weight for a single axle is 20,000 pounds.
Maximum weight for a tandem axle is 34,000 pounds.
Maximum weight for a five-axle combination is 80,000 pounds.

Lighting Requirements

For vehicles longer than 25 feet or wider than 80 inches, two yellow (or amber) lights must be mounted on the upper front corners (visible for 500 feet), three red lights on the rear in a horizontal line (visible for 500 feet), and reflectors as specified for identification.

Overweight Vehicles

Overweight vehicles must stop in a safe area until part of the load is removed or adjusted.
Arrest threshold is 2,000 pounds for excess weight and drops to 1,000 pounds for vehicles over 80,000 pounds.

Braking Techniques

On long downhill grades, brakes should be applied until speed drops to about 5 mph below safe speed, then released; this process should be repeated to maintain control.

Towing Regulations

The drawbar for towing must withstand the weight of the towed vehicle and not exceed 15 feet in length.
Drawbars are required for towing on controlled-access roadways, and two safety chains or cables must connect the vehicles to prevent detachment.
Passengers are prohibited from occupying towed vehicles on public highways.

Vehicle Length Limits

Maximum length for second division vehicles is 42 feet, with exceptions for transporting objects that cannot be easily taken apart (length may reach 80 feet for these objects).

Test your knowledge on truck safety regulations including warning devices, speed limits, vehicle dimensions, and weight restrictions. This quiz covers key guidelines that truck drivers must follow to ensure safety on the roads.