Distance judgment in the dark
How to judge distance and speed better when darkness gives you less information.
In the dark, you get less information about speed, width and distance. That is why it is common to overestimate how much time you have and underestimate how quickly situations develop.
What you need to know
- Fewer light references can make oncoming and leading vehicles look farther away than they are.
- Reflectors, signs and lights can mislead you if you do not see the whole surroundings.
- Lower speed and larger margins are the best compensation.
Typical situations
| Situation | What you should do | Common mistake |
|---|---|---|
| Rural road in the dark | Look far ahead, but do not lock onto a single light source. | Following the taillights ahead without making your own assessment. |
| Oncoming headlights in rain | Reduce speed and use the edge line for support. | Keeping the same speed even when you lose contrast. |
| Pedestrian crossing with poor lighting | Be extra prepared for dark-clothed pedestrians without reflectors. | Spotting the crossing but not the person beside it. |
Common mistakes
- Trusting too much that the headlights give you complete information.
- Driving too fast into what you cannot see clearly.
- Underestimating how hard it can be to see a pedestrian.
How to practice
Use this together with Driving in the dark , Using lights and signals and Adaptive headlights and cornering lights .