Overriding your headlight means you are
- within 150 metres of another vehicle.
- not able to stop within the distance you can see with your headlight. ✓
- not dimming your high beam for other drivers.
- riding with a broken headlight.
Answer: B. not able to stop within the distance you can see with your headlight.
Overriding your headlight means you are not able to stop within the distance you can see with your headlight.
Why this is the answer
The handbook defines the term directly: overriding happens when your speed is too high for the light you have, so you could not stop within the stretch of road the headlight shows you. It warns against this at night, in fog and in rain, and adds that in curves the leaned-over bike lights less road, so you should slow down there rather than override the headlight.
Why the other answers are wrong
- A. within 150 metres of another vehicle. — Following distance in metres is not what the term describes; the handbook talks about how far ahead you can see and stop, not a set distance behind another vehicle.
- C. not dimming your high beam for other drivers. — Failing to dim your high beam for oncoming drivers is a separate lighting courtesy, not the meaning of overriding your headlight.
- D. riding with a broken headlight. — A broken headlight is an equipment problem; overriding is about riding too fast for the light you do have.
Remember it
Ask yourself: if something appeared at the edge of my beam right now, could I stop? If not, you are overriding the headlight, so ease off the throttle.