Safe DrivingQuestion 35 of 120
You are approaching a curve posted at 40 mph while driving a loaded tractor-trailer. What is the safest approach?
a.Enter at 40 mph and brake through the curve
b.Enter at 45 mph and coast
c.Brake in the middle of the curve to control speed
d.Slow to about 10 mph below the posted speed before entering, then accelerate gently through the curve
Explanation
Posted curve speeds are set for passenger cars, so a high, heavy vehicle should be well below them and should complete braking before the curve begins. Braking inside a curve can break traction and cause a skid or rollover, and coasting through above the posted speed invites a rollover.
Practice all 120 questions free — no signup required.
Related questions on this topic
- You are driving a 40-foot straight truck at 35 mph on a dry road. What is the minimum safe following distance?
- The same 40-foot vehicle is now traveling at 55 mph on dry pavement. What following distance should you keep?
- Rain has just begun after a long dry spell and the road surface is slick. How should you adjust your following distance and speed?
- You are starting down a long, steep grade in a loaded truck. What is the correct braking technique?
- Which factors determine the safe speed for descending a mountain grade?
- How far ahead should a commercial driver normally be looking while driving?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against Commercial Driver's License (CDL) General Knowledge Test · How we review