CDL Vehicle Combination Practice Test

Question: 1 / 400

What is a characteristic of semitrailers made before 1975 that are equipped with air brakes?

They always have spring brakes

They often do not have spring brakes

Semitrailers made before 1975 that are equipped with air brakes often do not have spring brakes. This characteristic is important because spring brakes are typically a safety feature designed to act as a backup braking system in case of a failure in the air brake system. In older models, the technology and standards for air brakes were not as advanced as today, and many did not include this essential safety feature.

Vehicles built after 1975 saw significant changes in safety standards, requiring the inclusion of spring brakes to enhance the safety of the trailer when the air system fails. Therefore, understanding the design differences between older and newer semitrailers is crucial for drivers, especially in terms of safety and compliance with regulations. This awareness helps ensure that adequate measures are taken when operating older equipment.

Get further explanation with Examzify DeepDiveBeta

They have automatic brake systems

They require no inspection

Next Question

Report this question

Download CDL Vehicle Combination Practice Test PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy