Sharing the road, traffic hazards, and impairment
Domain overview
This domain tests how riders fit into traffic, anticipate other drivers’ mistakes, read road hazards, and recognize impairment. Missouri exam questions emphasize visibility, space, intersections, and the fact that alcohol and drugs affect riding before any legal limit.
Visibility and space
Ride with the headlight on, wear bright or reflective gear, and avoid lingering in blind spots. Missouri does not permit lane splitting or sharing a lane with another vehicle. Keep at least a two-second following distance, and add time for rain, night, or poor visibility. Position in the lane to see and be seen, but do not weave constantly.
Intersections and traffic
Most motorcycle crashes involving other vehicles happen at intersections, often when an oncoming driver turns left across the rider’s path. Scan approaching driveways and cross streets, cover the brakes, and watch front wheels for movement. Do not assume a driver has seen you because you are in the lane.
Surface hazards
Slow and reduce lean for gravel, sand, wet pavement, painted lines, steel plates, and tar snakes. Cross railroad tracks at a right angle, not a shallow angle. Watch for wind gusts, animals, and debris; increase space when passing trucks.
Impairment
Alcohol, cannabis, prescription medication, illegal drugs, and fatigue all reduce balance, reaction time, and judgment. Missouri’s adult limit is 0.08% BAC; riders under 21 face zero tolerance. Impairment can occur below the legal limit, so the safe choice is no alcohol or drugs before riding.
Worked example
An oncoming SUV approaches an intersection with its left turn signal on. The rider sees the front wheels begin to rotate. Instead of assuming the driver will wait, the rider covers the brakes, slows, and positions for an escape path. The reasoning: left-turn violations are common, and the rider’s best defense is space and early response.
Traps that cost marks
Do not assume drivers see you, follow too closely to “be visible,” cross tracks at a shallow angle, or treat the legal BAC limit as a safe riding threshold. Lane splitting is not legal in Missouri.