171. Which of these rigs have more chances to "off-track" while making turn?
Tractor with 45-feet trailer.
172. How much space in front of you is needed while driving on a highway?
1 second for each 10 feet of vehicle length.
173. Medicine used to treat the common cold:
Often makes you sleepy and should not be used while driving.
174. Which of these you should NOT do in an emergency situation?
It is not important how you brake in an emergency situation.
175. The primary cause of fatal crashes is:
Driving too fast.