---
title: "Road Signs & Markings | The License Desk"
url: https://www.thelicensedesk.com/theory-test/road-and-traffic-signs/
updated: 2026-09-26
---

> Source: https://www.thelicensedesk.com/theory-test/road-and-traffic-signs/ — last reviewed 2026-09-26. Markdown version generated at build time from the same content the page serves.

DVSA theory test topic guide

# Road Signs & Markings

The largest topic in the bank: signs, signals, road markings and their meanings.

[Practise 90 Road & Traffic Signs questions](/theory-test/road-and-traffic-signs/practice-test/)

Quick answer

Learn to read any UK road sign from its shape and colour, what white and yellow road markings mean, how road studs work and the traffic light sequence.

## How do you work out what a UK road sign means?

Read the shape first, then the colour. Know Your Traffic Signs, the Department for Transport’s guide, sets out three basic types: circles give orders, triangles warn and rectangles inform. A red ring or circle tells you what you must not do, while a blue circle usually tells you what you must do.

The table summarises the design rules from Know Your Traffic Signs and The Highway Code.

| Sign design | What it tells you | Examples |
| --- | --- | --- |
| Red triangle | Warning of a hazard ahead | Crossroads, bend, slippery road |
| Red ring or red circle | Prohibition: something you must not do | Maximum speed, no overtaking, no entry |
| Blue circle, no red border | Positive instruction: something you must do | Turn left, keep left, minimum speed |
| Blue rectangle | Information, or direction signs on motorways | Motorway junction signs |
| Green rectangle | Direction signs on primary routes | Primary route junction signs |
| White rectangle | Direction signs on non-primary routes, or plates used with other signs | Local route signs, distance plates |
| Brown panel | Route to a tourist attraction | Tourist destination signs |

## Why are the STOP and GIVE WAY signs different shapes?

They break the normal rules on purpose so they stand out. Know Your Traffic Signs describes the eight-sided STOP sign and the upside-down GIVE WAY triangle as exceptions that give certain signs greater prominence. At STOP you must stop at the line every time; at GIVE WAY you must let traffic on the major road pass.

-   **STOP:** you must stop behind the solid white line, then wait for a safe gap before moving off (rule 171). Stopping only when traffic is coming is not enough.
-   **GIVE WAY:** you must give way to traffic on the main road when emerging from a junction with broken white lines across the road (rule 172). You need not stop if the road is clear.

## What is the difference between maximum, minimum and national speed limit signs?

A number inside a red ring is a maximum limit you must not exceed. A white number on a blue circle is a minimum speed you must keep to, unless that is impracticable or unsafe. A white disc with one black diagonal stripe means the national speed limit for your vehicle and type of road applies.

For a car, the national speed limit is 60 mph on a single carriageway and 70 mph on a dual carriageway or motorway (rule 124). It is lower when towing and for many larger vehicles.

## What do yellow lines, red lines and no-waiting signs mean?

Yellow lines control waiting, red lines on red routes control stopping. Double yellow lines mean no waiting at any time unless signs show seasonal restrictions, while a single yellow line applies at the times on nearby plates. A blue disc with a red border and one diagonal means no waiting; two crossed diagonals mean no stopping.

-   Yellow-line waiting restrictions still let you stop while passengers get in or out, and to load or unload unless yellow kerb marks show loading restrictions too.
-   The crossed “no stopping” sign marks a clearway. Know Your Traffic Signs says it means no stopping, not even to pick up or set down passengers.
-   Double red lines mean no stopping at any time; single red lines apply at the times signed.
-   Yellow zigzags outside a school mean keep the entrance clear of stationary vehicles, even if picking up or setting down children.

## What do white lines along the middle of the road mean?

More paint means a stronger message. A broken centre line may be crossed to overtake or turn when the road is clear, but when the lines lengthen and the gaps shorten, a hazard is ahead (rule 127). A solid white line on your side of a double line means you must not cross or straddle it.

Rule 129 allows narrow exceptions to the solid line: to enter adjoining premises or a side road, to pass a stationary vehicle, or to overtake a pedal cycle, horse or road maintenance vehicle travelling at 10 mph or less. If the line nearer to you is broken, you may cross to overtake only if you can finish before a solid line on your side (rule 128). Chevrons bordered by a solid white line must not be entered except in an emergency, and you should not enter stripes bordered by a broken line unless it is necessary and safe (rule 130).

## What do the different coloured road studs mean?

Reflective road studs follow a fixed colour code set out in rule 132. White studs mark lanes or the middle of the road, red studs mark the left edge, amber studs mark the central reservation, green studs mark lay-bys and slip roads, and green/yellow studs show temporary lane layouts at road works.

| Stud colour | Where you see it |
| --- | --- |
| White | Lane lines or the middle of the road |
| Red | Left edge of the road |
| Amber | Central reservation of a dual carriageway or motorway |
| Green | Edge of the main carriageway at lay-bys and slip roads |
| Green/yellow | Temporary lane layouts, such as at road works |

## What is the traffic light sequence in the UK?

The sequence is red, red and amber, green, amber, then red again. Red and red-and-amber both mean stop. Green means you may go on only if the way is clear. Amber means stop at the stop line, unless you have already crossed it or are so close that pulling up might cause a collision.

A green filter arrow lets you go in the direction shown, if the way is clear, whatever other lights are showing. Alternately flashing red lights, used at places such as level crossings and fire stations, mean you must stop.

## What mistakes do learners make on road and traffic signs questions?

Most wrong answers come from reading the symbol but ignoring the shape and colour, or from confusing signs that look alike. The traps below come up again and again in practice questions, so check each option against the shape-and-colour system before choosing an answer, especially when two options sound plausible.

-   **Maximum versus minimum speed.** Red ring means maximum; blue circle means minimum.
-   **No waiting versus no stopping.** One diagonal is no waiting; a red cross is a clearway.
-   **Ahead only versus one-way.** The circular blue “ahead only” sign is an order; the rectangular one-way sign is information.
-   **Rolling through STOP.** A STOP sign always means a full stop at the line, however clear the road looks.
-   **National speed limit means 70.** Not on a single carriageway, where it is 60 mph for cars.
-   **Flashing headlights mean “go”.** Rule 111 says never assume flashing headlights are an invitation to proceed.

## Where should you go next?

Signs reward repetition, so the fastest way to lock in the system is to test yourself on real sign images, then practise the rules those signs enforce. Use the links below to drill this topic, move on to related topics, or try a full timed mock test.

-   [Practise road and traffic signs questions](/theory-test/road-and-traffic-signs/practice-test/)
-   [Rules of the road topic guide](/theory-test/rules-of-the-road/)
-   [Motorway rules topic guide](/theory-test/motorway-rules/)
-   [Take a full mock theory test](/mock-theory-test/)
-   [Practise hazard perception](/hazard-perception/)
-   [See all theory test topics](/theory-test/)

## Ready to test yourself on Road & Traffic Signs?

90 free Road & Traffic Signs questions in the official four-option format, each with an explained answer and the Highway Code rule it tests — with a timed test mode.

[Start the Road & Traffic Signs practice test](/theory-test/road-and-traffic-signs/practice-test/)

## Frequently asked questions

**### What are the three main types of UK road sign?**

Signs that give orders, signs that warn and signs that give information. Each type has its own shape: circles give orders, triangles warn and rectangles inform. Colour adds detail, so a red ring prohibits something while a blue circle gives a positive instruction.

**### What does a white circle with a black diagonal stripe mean?**

It means the national speed limit applies. For cars and motorcycles that is 60 mph on a single carriageway and 70 mph on a dual carriageway or motorway, according to rule 124 of The Highway Code. Lower limits apply when towing a caravan or trailer.

**### Why is the STOP sign a different shape from other signs?**

Know Your Traffic Signs explains that the STOP and GIVE WAY signs are deliberate exceptions to the normal shape and colour rules, used to give them greater prominence. At a STOP sign you must stop behind the white line, even when the road looks clear.

**### What do double yellow lines mean?**

Double yellow lines mean no waiting at any time, unless signs specifically show seasonal restrictions. You may still stop while passengers get in or out, and to load or unload unless loading restrictions also apply. Double red lines on red routes mean no stopping at any time.

**### What colour are the road studs on a motorway central reservation?**

Amber. Rule 132 of The Highway Code sets the colour code: white studs mark lanes or the middle of the road, red studs mark the left edge, amber studs mark the central reservation and green studs mark lay-bys and slip roads.

Sources

-   [Know Your Traffic Signs — Department for Transport](https://www.gov.uk/government/publications/know-your-traffic-signs)
-   [The Highway Code — Traffic signs](https://www.gov.uk/guidance/the-highway-code/traffic-signs)
-   [The Highway Code — Road markings](https://www.gov.uk/guidance/the-highway-code/road-markings)
-   [The Highway Code — General rules, techniques and advice for all drivers and riders (103 to 158)](https://www.gov.uk/guidance/the-highway-code/general-rules-techniques-and-advice-for-all-drivers-and-riders-103-to-158)
-   [The Highway Code — Light signals controlling traffic](https://www.gov.uk/guidance/the-highway-code/light-signals-controlling-traffic)
-   [The Highway Code — Using the road (159 to 203)](https://www.gov.uk/guidance/the-highway-code/using-the-road-159-to-203)

Sources last checked on 26 September 2026. Found an error? Email us — fixes are logged on our [corrections page](/corrections/).

## Which other theory test topics should you revise?

All 14 topics feed the same 50-question test, so revise every one. Then sit the [full free mock theory test](/mock-theory-test/) under the real time limit.

-   [Alertness](/theory-test/alertness/)
-   [Attitude](/theory-test/attitude/)
-   [Essential Documents](/theory-test/essential-documents/)
-   [Hazard Awareness](/theory-test/hazard-awareness/)
-   [Incidents, Accidents & Emergencies](/theory-test/incidents-accidents-emergencies/)
-   [Motorway Rules](/theory-test/motorway-rules/)
-   [Other Types of Vehicle](/theory-test/other-types-of-vehicle/)
-   [Rules of the Road](/theory-test/rules-of-the-road/)
-   [Safety & Your Vehicle](/theory-test/safety-and-your-vehicle/)
-   [Safety Margins](/theory-test/safety-margins/)
-   [Vehicle Handling](/theory-test/vehicle-handling/)
-   [Vehicle Loading](/theory-test/vehicle-loading/)
-   [Vulnerable Road Users](/theory-test/vulnerable-road-users/)