# AI tells a driver in the UK to 'turn right at the roundabout' by signaling right and staying in the right lane, ignoring that UK roundabouts require left-lane entry for right turns with proper signaling

- **ID:** `safety/roundabout-uk-driving`
- **Domain:** safety
- **Category:** traffic_law
- **Verification:** ai_generated
- **Fix Rate:** 88%

## Root Cause

In the UK, traffic drives on the left, and roundabout rules mandate entering from the left lane for any exit before 12 o'clock (including right turns), signaling right only after passing the exit before the desired one, then signaling left to exit; the AI incorrectly applies right-hand traffic logic.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| UK Highway Code v2023 | active | — | — |
| DVSA Driving Test Standards v5.0 | active | — | — |
| Google Maps Navigation v2024.3 | active | — | — |

## Workarounds

1. **Follow UK Highway Code Rule 185: approach roundabout in left lane for any exit before 12 o'clock (including right turns). Signal right after passing the exit before the one you intend, then signal left just before your exit. Example: for a right turn (3rd exit), enter left lane, signal right after 1st exit, signal left before 3rd exit.** (95% success)
   ```
   Follow UK Highway Code Rule 185: approach roundabout in left lane for any exit before 12 o'clock (including right turns). Signal right after passing the exit before the one you intend, then signal left just before your exit. Example: for a right turn (3rd exit), enter left lane, signal right after 1st exit, signal left before 3rd exit.
   ```
2. **Use a GPS app with UK-specific roundabout guidance (e.g., Waze or Google Maps with 'UK roundabout' mode enabled) that provides lane-specific instructions. For example, 'At the roundabout, take the third exit, stay in the left lane.'** (85% success)
   ```
   Use a GPS app with UK-specific roundabout guidance (e.g., Waze or Google Maps with 'UK roundabout' mode enabled) that provides lane-specific instructions. For example, 'At the roundabout, take the third exit, stay in the left lane.'
   ```
3. **Practice on a roundabout simulator or watch UK driving test videos (e.g., from DVSA) to internalize the signaling sequence: left lane approach → right signal after first exit → left signal before exit. This is especially important for multi-lane roundabouts with spiral markings.** (90% success)
   ```
   Practice on a roundabout simulator or watch UK driving test videos (e.g., from DVSA) to internalize the signaling sequence: left lane approach → right signal after first exit → left signal before exit. This is especially important for multi-lane roundabouts with spiral markings.
   ```

## Dead Ends

- **** — UK roundabouts are designed for left-lane entry; right-lane entry for right turns is illegal and causes confusion. (85% fail)
- **** — UK roundabout protocol requires left signal to indicate exit; failure to signal left is a common test failure and causes accidents. (75% fail)
- **** — GPS systems must be configured for UK driving; some apps default to left-hand traffic but may not provide explicit lane guidance for roundabouts. (60% fail)