Complete Questions and Guide Answers
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1. How can the driver anticipate a change in traffic signals as he approaches an
intersection?
Answer: Stale green lights
2. If your vehicle is 38 feet in length, what "timed-interval" count would you use under
ideal road and traffic conditions?
Answer: 4 seconds
3. What is the minimum following distance the driver of a commercial vehicle maintains
when following another commercial vehicle outside of a business or residential district?
Answer: 200 feet
4. What is the surest method of reducing stopping distance?
Answer: Drive slower.
5. What is meant by "The Danger Zone" of a vehicle?
, Answer: The area in front of the vehicle
6. What defensive measures can the driver take as he approaches any intersec- tion?
Answer:
7. If the weight of the vehicle is doubled, how many times must the stopping power
be increased?
Answer: 2x
8. If the speed of the vehicle is doubled, by how many times must the braking force be
increased to stop the vehicle?
Answer: 4x
9. If the weight and the speed of the vehicle is doubled, by how many times must the
braking force be increased to stop the vehicle?
Answer: 8x
10. How many braking systems are required on every truck, truck-tractor or bus?
Answer: Two
11. What is the purpose of an engine governor?
Answer: To keep an engine's RPM within safe limits.
12. Are engine retarders more effective at low engine R.P.M. or high R.P.M?
Answer: Higher RPM