California CDL — General Knowledge Practice Test 3

41.A small sign mounted underneath a crossbuck displays the numeral 2. What is it telling a commercial driver?

Two trains use this crossing every dayYou must remain stopped for two full seconds before proceedingThe roadway crosses two separate sets of rails hereThe next crossing lies two miles further along

42.What is the best way to avoid driving while fatigued?

Take pep pills or stimulants to stay awakeDrink coffee and keep pushing throughTurn up the radio and open the windowGet enough sleep, take breaks, and stop when drowsy

43.Students in the lower grades have to cross the road after leaving your school bus. What does California require of the driver?

Signal them across from the driver's seat once the mirrors look clearSend the oldest student ahead to check for trafficKeep the door shut until every approaching car has driven awayEscort them across with an approved hand-held stop sign, walking them in front of the bus

44.Total stopping distance for a commercial vehicle is made up of which three parts?

Perception distance, reaction distance, and braking distanceTurning distance, coasting distance, and parking distanceEngine distance, gear distance, and tire distanceOnly the distance the vehicle rolls after you brake

45.You have pulled a commercial vehicle over to the roadside and stopped. Where should the vehicle be sitting?

Angled outward, so the rear of the trailer is visible to trafficPartly in the right lane if the shoulder happens to be narrowAnywhere off the pavement, since a stopped vehicle is exemptParallel to the curb or shoulder, clear of traffic, and blocking no driveway, hydrant, sign, or intersection

46.If a tire blows out at highway speed, what is the correct first response?

Brake hard immediately to stopSteer quickly toward the shoulderLet go of the wheel and coastHold the wheel firmly, stay off the brake, and let the vehicle slow

47.What usually happens in a front-wheel skid, and how do you recover?

The rear swings out; steer sharply the other wayThe vehicle keeps going straight; ease off and let the front tires regain gripThe engine stalls; restart it while still movingNothing happens, because front wheels cannot skid

48.A Commercial Driver License (CDL) is required to drive a single vehicle with a gross vehicle weight rating of at least how much?

10,000 pounds16,000 pounds26,001 poundsThere is no weight threshold

49.Which statement about speed limits for commercial vehicles is correct?

Trucks may always drive at the posted car speed limitNever drive faster than is safe, and obey limits that may be lower for trucksSpeed limits do not apply to commercial vehiclesYou may exceed the limit when the road is empty

50.Apart from the hours around darkness, when else does California law oblige you to switch your headlights on?

Any time you are carrying a load over ten thousand poundsAny time weather has forced you to run the windshield wipersAny time you are traveling on a two-lane roadAny time the vehicle is inside a construction zone