File change and field change
This is how you carry out a safe file change with proper observation, signs, and timing.
Lane change means that you switch from one driving lane to another in the same direction. It requires good observation and the right timing to avoid dangerous situations.
The procedure for lane changing
| Step | Action |
|---|---|
| 1. Mirror | Check the rearview mirror, then the side mirror on the side you intend to move to |
| 2. Blind spot | Take a quick glance over your shoulder to cover the blind spot |
| 3. Signal | Turn on the turn signal well in advance |
| 4. Adjust speed | Maintain steady speed or slightly increase to merge into the new lane |
| 5. Change | Gradually move into the new lane |
| 6. Turn off signal | Turn off the turn signal once you are in position |
Right of way when changing lanes
The person changing lanes always has the right of way for traffic already in the lane you want to move into. You can never force your way in, even if a queue forms in your lane.
- Give a clear signal with your turn signal, but wait until there is space and it is safe
- Cancel the lane change if another driver accelerates and closes the gap
- Keep a three-second distance from the car in front after you have changed lanes
When a lane change is necessary
- Overtaking: You need to move to the left lane to pass on a multi-lane road
- Exiting: Position yourself in the correct lane well in advance of the exit
- Driving on a highway: Lane changes are part of the flow when entering and exiting
- Roundabout: Lane choices in roundabouts follow their own rules
Blind spot
The blind spot is the area not covered by the rearview mirror or side mirrors. It is located diagonally behind on both sides of the car. A quick glance over your shoulder is the only way to check it.
Common mistakes
- Forgetting the blind spot check is the most frequent cause of accidents during lane changes
- Too short turn signal timing gives other drivers too little time to react
- Slow lane changes create uncertainty; be decisive once you have made the decision
- Lane changing at intersections is prohibited and dangerous
Further reading
Read next
More in Class B course
Accidents involving vulnerable road users
Special procedures and considerations for accidents involving pedestrians and cyclists.
Accidents, reporting and first aid
Checklist for safe handling of accidents and proper notification.
Adapted speed and hidden danger
What adjusted speed means in practice, and how you anticipate hazards you cannot see.
Age limits and practice driving
Everything about age limits for class B and what is required for private practice driving with a companion.