How do traffic lights work?

We all know red means stop and green means go, but sometimes in the heat of the moment it’s easy to lose track - especially if you’re at the front of the queue with irate drivers beeping and revving their engines behind you.

From stalling to speeding off too fast, there are a number of factors to consider when stopping at traffic lights - especially if you’re learning to drive.

The traffic light sequence

• Red - Stop
• Amber - Stop but mentally prepare to go
• Green - Go

What should you do at each light?

Here’s what you should do at the various traffic signals:

• A red light means stop. You should wait behind the stop line on the carriageway until a green light shows.
• When a red and amber light are both glowing, you also need to stop. You should not pass the stop line until you see a green light.

• A green light means go if the way is clear. You should take extra care if you intend to turn either way, and give way to pedestrians who are crossing.
• You should stop at an amber light. You may go on only if the amber appears after you have crossed the stop line or are so close to it that to pull up might cause an accident.

What are filter arrows?

When you’re taking your test, examiners will pay attention to how you approach filter arrows. Green filter lights look similar to a full green light, but they don’t mean the same thing: they only give you the right of way in the direction of the arrow (usually to turn right).

It’s important to take notice here as the rest of the junction might be on red and still static. You can only move forward in the direction of the green arrow, and mustn’t drive on the wrong side of the road.

Sometimes all drivers (not just learners) can go on autopilot and just see green. If you’re in a test, the examiner will be watching to make sure you’re reacting to the signal rather than the colour. Just make sure you take a second to check - is it a full green light or an arrow coming up?

What other mistakes do learners make at traffic lights?

Even the most experienced driver can be caught out by a traffic light, but here are some things to watch out for while learning:

• Stalling on a green light - Stalling is one of those things that can happen from time to time, especially in a high-pressure environment like a test. Stay calm and take your time to find the biting point. If you rush, you may stall again. An examiner wants to see that you’re in control of the vehicle.
• Driving when the light is red and amber - This stage lets the driver know to get ready. You can start mentally preparing to drive but don’t start creeping forward. Wait for the light to turn green before setting off.
• Don’t forget to check for cyclists - As soon as the light turns green, you’ll naturally want to start driving ahead but it’s important to check your surroundings. Are there any cyclists nearby? You should pay special attention if you’re turning left. A quick look over your shoulder should help keep you safe and show the examiner how much care you take to acknowledge your surroundings.
• Stay calm - Even though it’s tough in a pressure situation like a test or an early independent drive, you should slow down, check twice and just wait for the lights. Patience is key.

How to deal with traffic lights on your driving test

If you’re driving, you’re likely to come across some traffic lights - and this won’t change when you’re taking your driving test. Remember that examiners are looking at your handling of the vehicle.

They’re watching for a smooth approach. Make sure you ease off in good time and move promptly when it turns green - but not so fast it’s dangerous. As mentioned above, you should also look out for cyclists.

Feeling nervous? Try to stay calm throughout your lessons and your test. Extra practice can help settle things down so you know just what to expect. Take out some learner driver insurance and get a supervisor to help you see the light(s).

Sources

www.gov.uk/government/publications/know-your-traffic-signs/traffic-signals

https://driving-tests.org/beginner-drivers/how-to-pass-your-driving-test-the-first-time

https://www.iamroadsmart.com/road-safety-resources/

https://www.rospa.com/road-safety/road-safety-information/roads

https://drivingtestsuccess.com/traffic-light-sequence/