Driving Test Guide to Roundabouts

01Approach Speed and Early Scanning

Roundabouts reward early reading. The further back you spot the junction, the more time you have to process lane choices, manage vehicle speed, and scan for gaps in traffic. Arriving at a roundabout layout unprepared is one of the fastest ways to record an immediate serious fault.

Reading the Roundabout Layout Early

Advance warning signs give you plenty of notice—a triangular give-way sign containing a roundabout symbol appears well before the junction itself. Use it to initiate your routine. From the moment you spot that sign, your safety checklist begins:

• Check your interior mirror immediately—how close is the vehicle behind you?
• Look for lane markings on the road ahead and signage indicating which lane serves your intended exit.
• Ease off the accelerator early—your approach speed must reduce progressively rather than remaining stable.
• Assess the roundabout itself—is traffic flowing freely, slowing down, or fully stopped?
• Check for vulnerable road users like cyclists and pedestrians near the island approaches.

The Correct Approach Speed

There is no fixed speed for approaching a roundabout—it relies entirely on your clear line of sight. If the junction is clear and you have open visibility, you can keep moving slowly in a low gear and emerge cleanly without dropping the anchor. If visibility is restricted or traffic is present, you must stop behind the give way line.

When to Stop and When to Keep Moving

The standard rule is to give way to traffic coming from your right. But if the roundabout is clear, you do not need to come to a complete halt. Stopping unnecessarily when the way is completely clear will be recorded as undue hesitation—a minor fault that can trigger a test failure if repeated.

02Lane Discipline and Exit Directions

Correct positioning prevents conflicts with other drivers. Unless road markings tell you otherwise, you must configure your position on approach based on the direction of your intended exit.

Multi-Lane Roundabouts

On larger junctions with two or more lanes, painted road arrows and text take precedence over general rules. Always follow what is marked on the asphalt or displayed on gantry signs—these show exactly which lane handles which destination.

• Left Lane: Handles the first exit, and frequently the second exit (check road text carefully).
• Right Lane: Handles later exits, specifically any turnings situated past the 12 o'clock position.
• Where two lanes serve the exact same exit, commit to your chosen lane throughout—never drift lazily across the white lines.

Going Straight Ahead (The 2nd Exit)

Navigating straight through a roundabout is the exact scenario that prompts the most lane confusion. The default rule in the UK—when road markings are absent—is to approach in the left-hand lane.

However, at busy or complex junctions where arrow markings clearly direct straight-ahead traffic into the right-hand lane, you must follow them. The examiner knows the test routes intimately and expects you to react dynamically to what the road surface commands.

03The Observation Sequence

Observation is the single most-faulted marking criteria at roundabouts on the DL25 test sheet. This rarely happens because learners forget to look—it happens because they look at the wrong zone, in the wrong direction, or at the wrong split-second.

Observations on Approach

As you slow down, your prime focus must lock onto the traffic already circling the island—specifically vehicles approaching from your right side. A critical mistake is staring only at the car ahead of you rather than analyzing the open gaps in the roundabout flow.

At the Give Way Threshold

When you stop or slow down at the entry line, look right to confirm a safe gap exists. If it is clear, emerge immediately. If you have to wait for traffic, maintain a scanning rhythm to catch vehicles speeding down the other approach roads to your right, not just vehicles already on the circle.

Observations While Circulating

Do not suspend mirror checks once you merge onto the junction. While driving around the roundabout, you must continuously gather situational data:

• Check the interior mirror regularly to see who is following you.
• Check the right door mirror if you need to confirm vehicles aren't hugging your inside flank.
• Check the left door mirror as you prepare to exit to ensure no cyclists or vehicles are on your nearside.
• Keep an eye ahead for vehicles that may have braked abruptly or missed their exit.

Exiting Observations

The exit phase is where mirror checks are omitted most frequently. Before you steer left to take your exit road, check your mirrors to ensure a vehicle in the inner lane isn't driving straight across your path.

04How to Signal Correctly

Your indicator tells other road users exactly what you intend to do. Signaling at the wrong time or failing to signal at all misleads traffic and will penalize your test score.

Turning Left (1st Exit)

Signal left on your approach to the roundabout. Maintain the left signal throughout the turn, and make sure it cancels automatically once you enter the new road. Always check your left mirror before steering off.

Going Straight Ahead (2nd Exit)

This is the indicator step learners forget most often. Do not signal on approach. But the moment your car passes the exit right before yours, apply your left signal. This informs waiting traffic that you are leaving the junction, allowing them to pull out safely.

Turning Right (3rd Exit or Beyond)

Signal right on approach and hold it active while circulating the inner section. As you pass the exit immediately before yours, switch your indicator to a left signal. This clear transition gives other road users plenty of time to react.

05Mini Roundabouts

Mini roundabouts operate under identical priority rules—give way to the right—but their compact scale alters how you apply your technique. The central island is simply a painted dome on the asphalt, meaning the entire junction can be cleared in under two seconds.

Key Technical Differences

• Overrunning the dome: You should avoid driving over the painted center if possible, but the law allows larger vehicles or tight turning circles to clip it if necessary.
• Compressed signaling windows: There is rarely enough physical space to signal left mid-circuit when going straight. If the roundabout is exceptionally small, focus on vehicle control and exit observations.
• Approach speed: You must approach a mini roundabout at a much lower speed. Because the layout is tight, vehicles appear from the side roads in an instant.

06Spiral and Lane-Controlled Roundabouts

Spiral roundabouts feature painted lane guides that wind across the surface of the junction itself. These lines are designed to route high volumes of traffic safely, preventing drivers from needing to swap lanes mid-circuit.

On a spiral roundabout, your route is pre-determined before you cross the entry line. The markings track you directly to your exit, meaning you must pick the correct lane on approach and stay within its lines.

How to Navigate a Spiral Layout Step-by-Step

1. 1
   Analyze Advance Boards Early

   Read gantry or roadside boards well before the junction to locate your exit and its assigned lane.

2. 2
   Verify On-Road Text and Arrows

   Look down at the approach lanes for painted text (e.g., A1, M4, or town names) to align your car correctly.

3. 3
   Lock In Your Position Before the Line

   Settle into your entry lane before you reach the give-way point. Trying to switch lanes at the mouth of a roundabout is a serious fault.

4. 4
   Follow the Curved Line Markings

   As you enter, let the painted lines guide you around the island. Do not clip the borders or drift into the adjacent lane.

5. 5
   Exit cleanly without changing lanes

   The lane will naturally lead you out into your exit road. Check your mirrors, signal left as you pass the previous exit, and leave cleanly.