Georgia Class A CDL Practice Test (GA) 8

Correct answer: A – The helper can monitor areas hidden from the driver

A helper can monitor blind spots that the driver cannot see while backing. The Georgia manual says the helper should stand near the rear where the driver can see them. Before moving, the driver and helper should agree on clear hand signals, especially a signal requiring the driver to stop.

Source: Georgia Commercial Driver’s Study Guide — § 2.2.4, “Backing Safely—Use a Helper”

Correct answer: D – All of the above

All three checks are part of the combination-vehicle inspection. The kingpin must be in place and free of bending, damage, or excessive wear, while the visible apron must not be bent, cracked, or broken. The trailer must also rest flat on the fifth-wheel skid plate without space between the apron and fifth wheel.

Source: Georgia Commercial Driver’s Study Guide — § 11M.6.1, “Kingpin, Apron & Gap”

Correct answer: D – A thin, clear layer of ice through which the road can be seen

Black ice is a thin layer of ice that is clear enough for the pavement beneath it to remain visible. Georgia’s CDL study guide explains that it can make the roadway look wet. When the temperature is below freezing and the pavement appears wet, the surface may actually be covered with black ice.

Source: Georgia Commercial Driver’s Study Guide — § 2.6.2, “Matching Speed to the Road Surface—Identifying Slippery Surfaces”

Correct answer: A – Turn on the four-way emergency flashers

Immediately activate the four-way emergency flashers when a commercial vehicle stops on the roadway or shoulder. Do not depend only on the taillights, especially at night. Required warning devices must generally be placed within ten minutes, but the flashers provide the first warning to approaching traffic.

Source: Georgia Commercial Driver’s Study Guide — § 2.5.2, “Communicating Your Presence—When Parked at the Side of the Road”, 49 CFR § 392.22(a), (b)(1) — Emergency signals; stopped commercial motor vehicles

Correct answer: A – Rust around the wheel nuts

Rust around wheel nuts can indicate movement caused by loose nuts, so their tightness should be checked. Missing clamps, spacers, studs, or lugs are dangerous, as are mismatched, bent, or cracked lock rings. Wheels or rims repaired by welding are also considered unsafe.

Source: Georgia Commercial Driver’s Study Guide — § 2.1.3, “What to Look For—Wheel and Rim Problems”

Correct answer: A – A heavier vehicle makes the brakes do more work and absorb more heat

The heavier the vehicle, the more work its brakes must perform and the more heat they absorb during a stop. Excessive heat can reduce braking effectiveness and eventually cause brake fade or failure. On a long downgrade, use engine braking as the principal means of controlling speed and use the service brakes properly as a supplement.

Source: Georgia Commercial Driver’s Study Guide — § 2.6.1, “Speed and Stopping Distance—The Effect of Vehicle Weight on Stopping Distance”, Georgia Commercial Driver’s Study Guide — § 2.16.3, “Brake Fading or Failure”