166. The tread depth on a front steering wheels tires should be:
Not less than 4/32 inch.
167. Your vehicle will be put out of service if ___ or more leaves in any leaf spring are missing.
1/4
168. Brake drums (or discs) must not have cracks longer than ___ the width of the friction area.
1/2
169. A hazard:
Is any road condition or other road user that is possible danger.
170. You are driving a heavy vehicle. You must exit a highway using an off-ramp that curves downhill. You should:
Slow down to 5 mph below the posted speed limit.