Overtaking and Undertaking: What Are the Rules?

Ever heard that the biggest danger on the road is other drivers? While this may hold some truth, it’s worth remembering that, to everyone else, we are also part of the risk!

When someone’s blocking our way and we’re impatient to get past—we’ve got places to be, after all—it’s our responsibility to ensure we overtake safely and within the guidelines of the Highway Code.

There are rules about overtaking, undertaking, and even when overtaking is not allowed. These may seem overwhelming at first, but Leo Driving School has put together this handy guide to help you understand the essential overtaking rules, ace your theory test, and stay safe on the road.

Rules for Overtaking Safely

In the UK, where we drive on the left, overtaking should almost always be done on the right. According to Rules 162 and 163 of the Highway Code, overtaking safely requires preparation.

Key Steps:

  1. Plan Ahead:
  2. Mirror, Signal, Manoeuvre:
  3. Overtake Quickly and with Room:

When is Overtaking Not Allowed?

Overtaking is dangerous and prohibited in certain situations, either indicated by signs or based on hazard awareness.

Common Restrictions:

No Overtaking Signs:

These circular signs with a red border explicitly prohibit overtaking.

However, cyclists or horse riders can be overtaken safely if conditions allow.

Solid White Lines:

Double solid white lines in the centre of the road mean no overtaking.

Exceptions: overtaking a stationary vehicle, a cyclist, or a road maintenance vehicle travelling under 10mph, or turning right.

Limited Visibility:

Avoid overtaking on the brow of a hill, near a corner, or where visibility is restricted.

Other Hazards:

Don’t overtake near pedestrian crossings, junctions, or level crossings.

Overtaking Cyclists

Cyclists require special care. Although overtaking signs and solid line rules don’t always apply to them, it’s crucial to follow these guidelines:

  • Leave at least as much room as you would when overtaking a car.
  • Be mindful of inexperienced cyclists or those swerving to avoid obstacles.
  • In some areas, leaving less than 1.5 metres when overtaking a cyclist can result in a fine of £100 and 3 penalty points.

Overtaking Large Vehicles

Large vehicles may travel slower, prompting you to overtake. Follow these steps for safety:

  • Drop back to increase visibility and ensure the driver can see you.
  • Only overtake when there’s sufficient time and space.
  • Don’t succumb to pressure from other drivers to overtake before it’s safe.

Undertaking: Is It Legal?

Undertaking—passing on the left—is not generally allowed in the UK. However, there are exceptions:

  1. Vehicle Turning Right:
  2. Slow-Moving Traffic:

Overtaking Stationary Vehicles or Obstructions

For parked cars or stationary obstacles:

  • Give way to oncoming traffic.
  • Check for hidden pedestrians or other hazards.

When Someone is Overtaking You

If another vehicle is overtaking you:

  • Maintain a steady speed and course.
  • Avoid speeding up or driving erratically.
  • Adjust your speed afterwards to ensure a safe distance.

FAQs

Can You Exceed the Speed Limit While Overtaking?

No. Speeding is never allowed, even to complete an overtaking manoeuvre. If you find you cannot overtake without speeding, your initial hazard assessment was likely flawed.

Can You Overtake on a One-Way Street?

Yes, on a multi-lane one-way street, you can overtake on either side. Always check mirrors frequently to stay aware of surrounding vehicles.

Well, there you go! Hopefully you're now clued up on all the overtaking rules, so you can avoid being that dangerous driver, and end up getting points on your licence, or worse—in an accident.