Vehicle InspectionCâu 2 / 120
What is the minimum legal tread depth in a major groove of a front steering-axle tire on a commercial motor vehicle?
a.4/32 of an inch
b.2/32 of an inch
c.6/32 of an inch
d.1/32 of an inch
Giải thích
Steer tires must have at least 4/32 inch of tread in every major groove because they carry the steering and a large share of the load. The 2/32 figure is the minimum for all other tires on the vehicle, and 6/32 and 1/32 are not federal minimums for any position.
Trích dẫn luật: 49 CFR §393.75Luyện miễn phí toàn bộ 120 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- You arrive for your shift and the tractor was driven by another driver yesterday. Before you move the vehicle, what does the federal rule require you to do first?
- During your walkaround you measure 3/32 inch of tread on a drive-axle tire and 5/32 inch on a steer tire. What is the correct conclusion?
- At what air pressure must the low-air-pressure warning device on an air-brake vehicle come on?
- You are running the air-brake check with a fully charged system, engine off, and the service brakes released. What is the maximum allowable air pressure loss per minute for a combination vehicle?
- With the engine off and the air system fully charged, you begin fanning off air pressure with the brake pedal. At roughly what pressure should the tractor protection valve and parking brake valve pop out?
- Which sequence correctly describes the seven-step inspection method?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với Commercial Driver's License (CDL) General Knowledge Test · Quy trình kiểm tra