Correct answer: B – When it may help prevent a collision
The horn can alert another road user to your presence and may help prevent a crash. Use it when a warning is needed, not merely to express impatience or announce every routine maneuver. Unnecessary horn use can startle others and create an additional hazard.
Source: Utah Commercial Driver License Handbook, 2025 Edition — § 2.5.2, “Communicating Your Presence”
Correct answer: D – It will tend to continue straight even when the wheel is turned
In a front-wheel skid, the front of the vehicle tends to continue straight regardless of steering-wheel movement. On a very slippery surface, the driver may be unable to follow a curve or make a turn. To recover, stop turning or braking so hard and allow the vehicle to slow without causing another skid.
Source: Utah Commercial Driver License Handbook, 2025 Edition — § 2.19.3, “Front-wheel Skids”
Correct answer: C – Obey the applicable speed limit and reduce speed when conditions require
Utah law prohibits operating any vehicle faster than is reasonable and prudent for existing traffic, weather, roadway, and other hazards. Speed limits established for a highway must also be obeyed. A school bus driver must stay within the applicable limit and select a lower speed whenever necessary to maintain safe control.
Source: Utah Code § 41-6a-601 – Speed regulations -- Safe and appropriate speeds at certain locations -- Prima facie speed limits -- Emergency power of the governor, Utah Code § 41-6a-602 – Speed limits established on state highways
Correct answer: D – All of the above
Dry bulk, hanging meat, and livestock all require special attention. Dry bulk and hanging meat may create a high, unstable center of gravity, while livestock can move or lean during curves. These load characteristics can affect handling and increase rollover risk, making slow and careful operation particularly important during turns and curves.
Source: Utah Commercial Driver License Handbook, 2025 Edition — § 3.4, “Cargo Needing Special Attention”
Correct answer: D – All of the above
Before backing, inspect the intended path and check clearance around and above the vehicle. Back slowly while checking both mirrors, and turn toward the driver’s side whenever possible for better visibility. A helper should be used when available, with hand signals—including a stop signal—agreed upon before backing begins.
Source: Utah Commercial Driver License Handbook, 2025 Edition — § 2.2.3, “Backing Safely”
Correct answer: B – Two-way traffic begins ahead
The two-way traffic warning sign tells drivers that opposing traffic will be present ahead. It is commonly used where a divided or one-way roadway transitions to two-way operation. Drivers should remain in the proper lane and be prepared to meet vehicles traveling in the opposite direction.
Source: Utah Driver Handbook — § 9, “Traffic Signs”
