Iowa motorcycle Conditions and emergencies Test 2

The front wheel and handlebars begin shaking rapidly, rather than mildly wandering on road grooves. What response does the manual recommend?

Correct answer: Grip firmly without fighting the wobble, close the throttle gradually and stop safely without applying the brakes.

Do not try to accelerate out of a wobble or use braking that may worsen it. Hold the bars firmly, reduce power gradually, move your weight forward and down, and pull off safely to identify and correct the cause.

Source: Iowa DOT-linked Motorcycle Operator Manual (catalog labels it Archived), Form 430008 PM802 05/14/2024; MSF 18th revision June 2020; printed page 31, physical PDF page 36; Mechanical Problems — Wobble. General riding guidance, not a statement of Iowa licensing or equipment law. ↗

A manual motorcycle's engine starts seizing and threatening to lock the rear wheel. What should you do with the clutch?

Correct answer: Squeeze it to disconnect the engine from the rear wheel and move to a safe stop.

Squeezing the clutch disconnects a seizing engine from the rear wheel. Pull off safely and address the cause before riding again; do not force the damaged engine to keep driving the wheel.

Source: Iowa DOT-linked Motorcycle Operator Manual (catalog labels it Archived), Form 430008 PM802 05/14/2024; MSF 18th revision June 2020; printed page 31, physical PDF page 36; Mechanical Problems — Engine Seizure. General riding guidance, not a statement of Iowa licensing or equipment law. ↗

During a rear-wheel skid, the rear wheel has moved out of line with the front. Why can abruptly releasing the rear brake be dangerous?

Correct answer: The regained traction can snap the motorcycle upright and cause a high-side crash.

Releasing a locked rear wheel while the wheels are misaligned can abruptly restore traction and throw the rider. Even slight misalignment can create this high-side risk. This question explains the hazard, not a substitute for supervised braking practice.

Source: Iowa DOT-linked Motorcycle Operator Manual (catalog labels it Archived), Form 430008 PM802 05/14/2024; MSF 18th revision June 2020; printed page 26, physical PDF page 31; Crash Avoidance — Rear-Wheel Skids. General riding guidance, not a statement of Iowa licensing or equipment law. ↗