Pennsylvania CDL — General Knowledge Practice Test 10

1.You approach a pedestrian who wants to cross where there is no marked crossing. What should you do?
Wave them across so they can hurry overNever wave them into traffic; other drivers may not stopSound your horn to move them alongSpeed up to pass before they step off the curb
2.Why should you watch carefully for drivers of vans, loaded station wagons, and rental trucks?
Their blocked vision means they may not see youThey are always exceeding the speed limitThey are required to yield to trucksThey cannot legally change lanes
3.If a cargo fire starts in a box trailer or van, what should you do with the doors?
Keep the doors closedOpen the doors to let smoke escapeOpen one door to reach the fireProp the doors open for firefighters
4.On a newer air-brake vehicle, how do you apply the parking (spring) brakes?
Pull out a yellow, diamond-shaped control knobPush in a red, eight-sided knobPress the brake pedal all the way downTurn a key on the dashboard
5.On which fires should you NOT use water?
Burning wood or paperA burning tireElectrical fires and gasoline firesFires in ordinary combustibles
6.In an air-brake system, how are your brake lights turned on to warn drivers behind you?
A cable physically pulls the light onThe lights stay on continuously while drivingAn electric switch worked by air pressure turns them onThe driver flips a separate dashboard switch each stop
7.At a passive railroad crossing with no traffic-control devices, who decides whether it is safe to proceed?
A flagman stationed at the crossingThe train engineer's signalThe driver alone must decideAutomatic gates lowered by the railroad
8.How does alcohol interact with other drugs a driver may have taken?
It cancels out their effectsIt has no effect on other drugsIt can intensify the effects of other drugsIt only matters with illegal drugs
9.What are the three basic steps to take at the scene of any accident?
Move the vehicles, call your dispatcher, and take photosInterview witnesses, clear the road, and leaveExchange insurance, unload cargo, and waitProtect the area, notify authorities, and care for the injured
10.Total stopping distance is the sum of which three distances?
Speed distance, weight distance, and grade distanceSteering distance, signal distance, and coast distancePerception distance, reaction distance, and braking distanceFollowing distance, passing distance, and merge distance