Skip to content

Emergencies · medium

A deer steps into your headlight beam on a dark two-lane road. What gives you the best chance of avoiding a serious crash?

  1. A Flash the headlights repeatedly to freeze it where it stands
  2. B Brake firmly in a straight line and sound the horn; do not swerve into opposing lanes or off the road Correct
  3. C Swerve hard toward whichever side the animal came from
  4. D Accelerate to clear the animal before it reaches your lane

Why B is correct

Swerving is the reflex and it is the wrong answer, because every alternative the road offers beside you is worse than the animal: opposing traffic, a tree, a culvert, a drop. People die in animal collisions precisely because the swerve carried them somewhere holding a larger object. Brake hard in your own lane, use the horn, and accept contact if it is coming — striking a deer is survivable, striking what stood behind it often is not. Where room genuinely exists ahead and beside you, slow rather than steer away; deer usually clear the road within seconds unaided.

Why the other options are wrong

A. Flash the headlights repeatedly to freeze it where it stands
Flashing lights produces no predictable response. Animals respond to illumination inconsistently, and the ones that do react frequently stop dead in the road rather than clearing it. Flashing can therefore create precisely the problem it was meant to solve, while costing the driver what little distance remained.
C. Swerve hard toward whichever side the animal came from
Swerving back toward where the animal appeared sends you into the rest of its herd. Deer travel in groups, and the animal you can see is frequently not the next one to arrive.
D. Accelerate to clear the animal before it reaches your lane
Accelerating removes braking distance and adds energy to whatever follows. Reaching the animal sooner is not at all the same as getting past it safely.

On the road

One driver brakes in a straight line and pays for a bumper. Another swerves across the centre line and meets a pickup head-on. Same animal, same stretch of road, and the second decision cost rather more than a bumper. Nobody remembers which of them had the faster reflexes; everybody remembers which one stayed in their own lane.

Similar questions

  • Stalling Across the Rails | CO

    Your vehicle stalls on a railroad crossing just as the signals begin to flash. What is the best action?

  • Stuck Throttle | CO

    The accelerator pedal sticks with the engine revving and the car accelerating on its own. What is the correct sequence of actions?

  • Headlight Failure at Night | CO

    Both headlights fail while you are driving on an unlit rural road at night. What should you do?

  • Engine Overheating | CO

    During a long uphill climb in summer traffic, the temperature warning light comes on and steam begins to rise from the bonnet edges. What is the correct response?

  • Hood Flies Open | CO

    The bonnet latch fails and the hood springs open, completely blocking your view through the windscreen while you are moving in traffic. What should you do?

Sources

Every question on this page is written in our own words and is not copied from the handbook. Reviewed by Ethan Wen on 2026-10-18.