Road rules · Motorcycle License

Motorcycles in Blind Spots

A motorcycle fits entirely inside a car's blind spot, the zone beside the rear quarter that mirrors do not cover. The illustrated position, rider at the right-rear corner of a car that is about to change lanes, is the exact geometry of one of the most common motorcycle crashes.

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Top-down two-lane roadway with a motorcycle riding beside the right rear quarter of a car that is preparing to change right
The rule

How this situation is handled

Both parties get a rule. The driver's: an actual head check over the shoulder before any lane change, because mirrors alone cannot clear a lane of motorcycles. The rider's: never settle beside a car, ride ahead of or behind the blind spot, and pass through it decisively rather than cruising in it.

The mistake it catches

The tested mistake for riders is lingering beside a vehicle at matched speed; for drivers, changing lanes on mirrors alone. Each test asks its own audience, and the answer is always the head check or the position change.

On the test

Where this scenario is tested

This situation appears in 4 questions across 4 of our state banks, on Driver License and Motorcycle License practice tests. Start with your state:

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A real practice question about this rule

Sample 1 · Vulnerable Users And Large Vehicles

Before merging on a highway, why should you make a second blind-spot check for motorcycles?

Top-down two-lane roadway with a motorcycle riding beside the right rear quarter of a car that is preparing to change right
  1. They are required to stop whenever a car signals
  2. They cannot travel at highway speed
  3. They must always ride on the shoulder
  4. Their smaller size can hide them from an initial mirror checkCorrect

Why: Because motorcycles can disappear in blind spots, a driver should check mirrors and blind spots, signal early, and check twice before changing lanes or merging. Therefore, the supported response is "Their smaller size can hide them from an initial mirror check".

Every practice test explains its answers this way. Pick your state and take one free; no sign-up.

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Questions

Questions about motorcycles in blind spots

Where are a car's blind spots?

Beside each rear quarter, outside the mirror coverage. A motorcycle disappears into them completely, which a sedan never quite does.

How should a rider handle another vehicle's blind spot?

Stay out of it: position ahead of it or behind it, and when passing, move through it briskly. Matching speed beside a car is the position the crash statistics are made of.

What must a driver do before changing lanes?

Signal, check mirrors, and turn their head for a direct look at the blind spot. The head check is the step written tests insist on, because it is the one that finds motorcycles.

Why are motorcycles hit in lane changes so often?

They are narrow enough to hide in mirror gaps and their speed is hard to judge in a quick glance. The combination defeats mirror-only lane changes routinely.

Does lane position help a rider stay visible?

Yes. Riding where you appear in the driver's mirror, and adjusting position as traffic shifts, is taught in every motorcycle manual as active visibility, not a one-time setup.