Rules for Driving in Adverse Weather Conditions

Reference: 🔗 Gov.uk - Rules for Driving in Adverse Weather Conditions

Rule 226: Using Headlights and Fog Lights

  1. You MUST use headlights when visibility is seriously reduced (less than 100 metres / 328 feet).
  2. Fog lights may be used but MUST be switched off when visibility improves.

Rule 227 Wet Weather

  1. Stopping distances at least double compared to dry roads due to reduced tyre grip.
  2. Precautions:
    1. Keep a safe distance from vehicles ahead.
    2. If steering becomes unresponsive, ease off the accelerator and slow down gradually.
    3. Rain and spray reduce visibility – be cautious.
    4. Beware of spilt diesel, which makes roads extremely slippery.
    5. Extra care needed around pedestrians, cyclists, motorcyclists, and horse riders.

Rule 228: Preparation

  1. Check weather forecasts for warnings.
  2. DO NOT drive unless essential.
  3. Carry an emergency kit including:
    • De-icer, ice scraper, torch, warm clothing, first aid kit, jump leads, shovel, warm drink, emergency food.

Rule 229: Before You Set Off

  1. MUST ensure clear visibility (remove snow/ice from windows, lights, and number plates).
  2. MUST make sure mirrors are clear and windows are demisted.
  3. Remove loose snow that could fall into the path of other road users.
  4. Check route for delays and further snow warnings.
    Make sure your windscreen is completely clear

Rule 230: While Driving

  1. Drive with care, even on treated roads.
  2. Stopping distances can be 10 times greater than on dry roads.
  3. Be cautious when overtaking gritting vehicles and snowploughs.
  4. Watch for sudden changes in road conditions.
  5. Listen to travel bulletins and observe variable message signs.

Rule 231: Driving Techniques on Ice

  1. Drive slowly in a high gear.
  2. Accelerate and brake gently.
  3. Reduce speed on bends and brake before turning.
  4. Check grip by braking gently in a safe place.
  5. No road noise = ice! Be extra cautious.

Rule 232: High-Risk Vehicles and Areas

  1. High-sided vehicles, cyclists, motorcyclists, and horse riders are at risk.
  2. Gusty areas: Open roads, bridges, and gaps in hedges can cause sudden wind shifts.

Rule 233: Keeping Safe in Strong Winds

  1. Large vehicles create turbulence, affecting motorcyclists and other road users.
  2. Keep well back when motorcyclists are overtaking high-sided vehicles.

Rule 234: Before Entering Fog

  1. Check mirrors, then slow down.
  2. Fog signs mean fog ahead – be prepared even if the road appears clear.

Rule 235: Driving in Fog

  1. Use lights as required see Rule 226.
  2. Keep a safe distance – rear lights of other vehicles can create a false sense of security.
  3. Be able to stop within the distance you can see.
  4. Use windscreen wipers and demisters.
  5. Beware of drivers not using headlights.
  6. Do not accelerate to escape a tailgating vehicle.
  7. Check mirrors before slowing down, and use brake lights to warn drivers behind.
  8. At junctions, stop in the correct position and listen for traffic before emerging.

Rule 236: Fog Light Restrictions

  1. MUST NOT use front or rear fog lights unless visibility is seriously reduced.
  2. MUST switch off fog lights when visibility improves.

Rule 237: Hot Weather

  1. Ventilate the vehicle to prevent drowsiness.
  2. Be aware of road surface changes:
    1. Soft roads can affect steering and braking.
    2. Rain after a dry spell can make roads slippery.
  3. If dazzled by bright sunlight, slow down or stop.