Interaction in traffic is about how the driver actively and consciously communicates intentions through signs and signals, adjusts speed and chooses correct positioning to create safe and smooth traffic.
Signs and signals
Correct use of signs and signals ensures that other road users understand your intentions. Below is an overview of common signal forms:
| Channel | Example | Purpose |
|---|---|---|
| Turn signals | Left/right turn | Signal planned course change |
| Brake lights | Reduced speed or stop | Signal deceleration |
| Horn | Short honk | Warning of acute situation |
| Eye contact | Gaze toward pedestrian or driver | Confirm understanding in complex situations |
| Hand signals | Cyclists and pedestrians | Support intention in unclear situations |
| For details on light and signal use, see Use of lights and signals. |
Speed adjustment
Adapting speed correctly is essential to ensure time for reaction and interaction:
| Situation | Recommended speed adjustment |
|---|---|
| Dense traffic | Keep low speed, follow flow and avoid unnecessary maneuvers |
| Intersections with limited visibility | Reduce speed, observe all signals and turn signals |
| Sharp curves | Lower speed before curve, avoid braking in the turn |
| Varying weather conditions | Adjust speed according to visibility and road grip (see Speed and distance) |
Positioning in the roadway
Correct positioning makes your intentions predictable and creates space for others:
| Road type | Positioning |
|---|---|
| One-way street with one lane | Center of lane, avoid unnecessary lane changes |
| Two-way road without center stripe | Keep to the right, avoid crossing center line |
| Roundabout | Choose outer lane for later exit, inner for early exit |
| Motorway | Right driving lane, lane changes with turn signals in good time |
| See also Positioning and driving technique for a thorough review. |
Cooperation in complex situations
In situations with many road users, conscious cooperation is important:
- Give space at merging areas and roundabouts. See also Merging and queue driving.
- Show consideration for vulnerable road users like cyclists and pedestrians.
- Avoid surprising maneuvers by signaling early.
Merging (zipper method) in queues
| Situation | Recommended action | Related rule |
|---|---|---|
| Lane ends | Maintain speed, merge every other car at the end point | Predictability and flow |
| Queue at narrowing | Use entire lane up to marked end | Better capacity and shorter queue |
| Motorway on-ramp | Adjust speed and merge in with clear turn signals | See Motorway driving |
Summary
Good interaction in traffic requires a combination of clear signs, correct speed adjustment and strategic positioning. By practicing these principles, you contribute to safe, predictable and smooth traffic. For a comprehensive guide to interaction, see Attention and interaction.