148 When vehicles merge into the same lane, they must keep a distance of at least: (A) 2 meters (B) 1 meter (C) half a meter.

145 If a railroad crossing gate has not been lowered or the crossing guard is not telling drivers to stop, drivers are required to: (A) watch and listen carefully to make certain there is no train coming from either direction before they cross the tracks (B) speed up and cross the tracks quickly (C) wait for the guard's instructions before crossing the tracks.