Correct answer: A – Stopping and moving forward to improve the vehicle's position
In California's basic control skills test, a pull-up occurs when the driver stops and moves forward to clear an encroachment or obtain a better position. Merely stopping without changing direction is not a pull-up. Excessive pull-ups may be counted as errors during the exercise.
Source: California Commercial Driver Handbook — § 12.1, “Skills Test Scoring”
Correct answer: B – Traffic from another roadway may join your lane ahead
California's Merge sign warns that merging movements may occur where lanes from separate roadways converge. It alerts drivers on the major roadway or entering roadway to the merge condition ahead. Unlike a Lane Ends sign, it does not indicate that a lane on the same roadway is ending.
Source: California MUTCD 2026 — § 2C.45, “Merge Signs and Plaque (W4-1, W4-5, and W4-5aP)”
Correct answer: A – The tires ride on water and lose contact and traction with the road
During hydroplaning, the tires lose contact with the roadway and have little or no traction. Steering and braking may become ineffective. Hydroplaning can occur at speeds as low as 30 mph when enough water is present, especially when tire pressure is low or tread is worn.
Source: California Commercial Driver Handbook — § 2.6.2, “Matching Speed to the Road Surface”
Correct answer: A – It can make steering difficult
Poor weight distribution can make a commercial vehicle unsafe to handle. Excessive weight on the steering axle can cause hard steering and may damage the steering axle and tires. The load must be properly balanced rather than concentrated too heavily over the front axle.
Source: California Commercial Driver Handbook — § 3.2.4, “Balance the Weight”
Correct answer: D – A sharp right turn followed by a sharp left turn
A Reverse Turn sign warns of two turns in opposite directions that are close together. The direction at the top of the symbol identifies the first turn encountered. When that part points right, expect a sharp right turn followed by a sharp left turn.
Source: California MUTCD 2026 — § 2C.07, “Horizontal Alignment Signs (W1-1 through W1-5, W1-11, and W1-15)”
Correct answer: B – The available roadway width decreases ahead
Under California's sign standard, the ROAD NARROWS sign warns of an abrupt reduction in pavement width. On a two-lane road, the narrow section may not provide enough width for vehicles traveling in opposite directions to pass simultaneously without reducing speed.
Source: California MUTCD 2026 — § 2C.17, “ROAD NARROWS Sign (W5-1)”
