safety traffic_law ai_generated true

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

Also available as: JSON · Markdown · 中文
88%Fix Rate
90%Confidence
1Evidence
2024-06-10First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
UK Highway Code v2023 active — — —
DVSA Driving Test Standards v5.0 active — — —
Google Maps Navigation v2024.3 active — — —

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.

generic

中文

在英国，车辆靠左行驶，环岛规则要求对于12点之前的任何出口（包括右转）从左侧车道进入，仅在通过所需出口的前一个出口后才打右转向灯，然后打左转向灯驶出；AI错误地应用了靠右行驶的逻辑。

Official Documentation

https://www.gov.uk/guidance/the-highway-code/rules-about-roundabouts-184-190

Workarounds

  1. 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. 
    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. 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.' 
    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. 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. 
    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.

中文步骤

  1. 遵循英国《公路法规》第185条：对于12点之前的任何出口（包括右转），从左侧车道接近环岛。在通过所需出口的前一个出口后打右转向灯，然后在即将驶出前打左转向灯。例如：对于右转（第三个出口），从左侧车道进入，在通过第一个出口后打右转向灯，在第三个出口前打左转向灯。
  2. 使用具有英国特定环岛导航功能的GPS应用（例如Waze或Google Maps，启用'英国环岛'模式），该应用提供车道特定指示。例如：'在环岛处，从第三个出口驶出，保持在左侧车道。'
  3. 通过环岛模拟器练习或观看英国驾驶考试视频（例如来自DVSA），内化信号顺序：左侧车道接近→通过第一个出口后打右转向灯→在出口前打左转向灯。这对于带有螺旋标线的多车道环岛尤为重要。

Dead Ends

Common approaches that don't work:

  1. 85% fail

    UK roundabouts are designed for left-lane entry; right-lane entry for right turns is illegal and causes confusion.

  2. 75% fail

    UK roundabout protocol requires left signal to indicate exit; failure to signal left is a common test failure and causes accidents.

  3. 60% 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.