T-Junctions Explained: How to Turn Left and Right Safely

Approaching a T-junction involves more than choosing whether to turn left or right. You need to recognise the junction, prepare your vehicle, assess other road users and decide when it is safe to proceed.

This guide explains both turns in straightforward language, covering positioning, observations, speed, corner shape, gradients and parked vehicles. It draws on Highway Code and DVSA guidance for England, Scotland and Wales.

How Do You Identify a T-Junction?

A T-junction is where one road ends and meets another, forming the shape of the letter T. When approaching along the road that ends, you normally turn left or right, subject to signs and restrictions.

Look ahead for:

• Traffic moving across the end of your road.

• Kerbs curving to the left and right.

• Buildings, walls or hedges facing you.

• Give Way or STOP signs and markings.

• Direction signs showing routes to either side.

Spotting these clues early gives you time to prepare without rushing.

This article focuses on emerging from the road that ends, rather than turning from the continuing road into a side road.

What Is an Open or Closed Junction?

An open junction provides a good view along the road you intend to join while you are still approaching.

A closed junction has restricted visibility because of buildings, hedges, parked vehicles, bends or other obstructions.

A junction can be open in one direction and closed in the other. These descriptions concern your view; they do not determine priority.

Approach at a speed that allows you to stop before entering danger. A clear view may help you plan earlier, but you must continue observing as you get closer.

Why Is MSPSL Important?

MSPSL means Mirrors, Signal, Position, Speed and Look.

It helps organise your preparation so that braking, signalling and positioning happen in good time. DVSA guidance supports using a safe, systematic routine at junctions.

Mirrors

For a left turn, check your interior and left door mirrors.

For a right turn, check your interior and right door mirrors, paying attention to anyone overtaking or filtering alongside.

Use additional checks where the situation requires them.

Signal

Indicate your intended direction clearly and in good time. Avoid signalling so early that it could suggest you are entering an earlier driveway or side road.

Position

Choose the appropriate lane and position for your turn, taking account of markings, road width and obstructions.

Speed

Slow progressively. In a manual car, select a gear that suits your speed and the likely need to stop.

Look

Assess both directions, your intended path, pedestrians, cyclists and the space beyond the junction.

Looking is continuous throughout the routine. Repeat checks as the situation develops.

Where Should You Position for a Left Turn?

Use a marked left-turn lane where provided. Otherwise, adopt a safe position towards the left without crowding the kerb.

Official Safe Driving for Life guidance suggests approximately one metre from the kerb as a general guide. Adapt this to the road and available space.

Do not swing right before turning left. Leave enough clearance for the whole car to follow the corner safely, including the rear left wheel.

Where Should You Position for a Right Turn?

On an ordinary two-way approach, position just left of the centre line—or the imaginary centre if there is no marking—where it is safe to do so.

Keep the whole vehicle on your side. Do not straddle the line or obstruct traffic turning into your road.

Use a dedicated right-turn lane if provided. When emerging from a one-way road, the normal right-turn position is towards the right, subject to signs and markings.

On a narrow road, leave sufficient room for other vehicles. Correct positioning must suit the actual space, not simply a reference point.

How Do You Judge the Kerb, Corner and Markings?

Assess three things together:

• The shape of the corner.

• The width and layout of the road you are joining.

• The signs and markings controlling your movement.

For a left turn, remember that the rear wheels follow a tighter path than the front wheels. Turning too early or starting too close may bring the rear left wheel onto the kerb.

For a right turn, allow enough forward movement before steering so that you do not cut diagonally across the wrong side of the road you are joining.

Look towards your intended path. Reference points can support learning, but they vary with the car, seat position and junction geometry.

Where Should You Stop?

At a STOP sign, you must stop completely behind the solid stop line, even if the road appears clear.

At a Give Way junction, you must give way to traffic on the road you are joining. Stop behind the markings when traffic or limited visibility makes stopping necessary. A stop is not automatically required at every Give Way junction.

Judge the position of the front of your car, not just your driving seat.

If visibility remains restricted, first meet any stopping requirement. Then, only where safe, move forward very slowly to improve your view, remaining ready to stop. Never use the front of your car to force approaching traffic to give way.

At an unmarked junction, approach cautiously and establish who is moving where. Do not assume that road width alone determines priority.

What Is LADA?

LADA means Look, Assess, Decide and Act. It is a teaching aid for making safe decisions.

Look: Check both directions, your intended route, pavements, cycle facilities and blind areas.

Assess: Judge the speed, distance and direction of other road users. Consider your vehicle’s ability to move off and the space available beyond the junction.

Decide: Wait, cautiously improve your view or proceed.

Act: Carry out your decision smoothly while continuing to observe.

Right–left–right can be a useful starting observation pattern, but it is not a complete safety check. Repeat observations wherever the risk requires, and look into your intended path before moving.

Moving your head slightly can help reveal someone hidden by a windscreen pillar.

How Do You Judge a Safe Gap When Turning Left?

On an ordinary two-way road, you normally join the nearest lane, with traffic approaching that lane from your right.

However, you must also check left. A vehicle approaching from the left could be overtaking and using the lane you intend to enter.

Choose a gap that allows you to join smoothly without making another road user brake sharply or swerve.

Do not rely solely on an approaching driver’s left indicator: confirm what the vehicle is actually doing.

How Do You Judge a Safe Gap When Turning Right?

A right turn usually involves crossing the nearer traffic stream before joining the farther one.

You therefore need sufficient space in both directions to complete the movement safely.

Check that:

• Traffic from the right is far enough away for you to cross its path.

• Traffic from the left leaves a suitable gap for you to join.

• Your destination lane has room for your car.

• No pedestrian, cyclist or other road user conflicts with your route.

Do not cross the first lane and wait in the middle of an ordinary road simply because one direction is clear. Unless the layout provides a suitable protected refuge, plan to complete the turn in one safe movement.

For dual carriageways, the Highway Code distinguishes between central reservations that can safely contain the whole vehicle and those that cannot.

What About Pedestrians and Cyclists?

For either turn, give way to pedestrians crossing or waiting to cross the road you are entering or emerging from.

Do not turn across a cyclist continuing along your path. Check cycle lanes and tracks carefully, including facilities carrying cyclists in both directions.

These responsibilities are reflected in Highway Code Rules H2 and H3.

How Should You Handle Sharp and Sweeping Corners?

A sharp corner changes direction over a short distance. It generally needs a lower speed and a greater steering input.

A sweeping corner curves more gradually. Steering can be gentler, but limited visibility or obstructions may still require a very low speed.

For a left turn, avoid clipping the kerb or running wide.

For a right turn, avoid cutting the corner or steering so late that you approach the far kerb.

Assess the whole available route and coordinate your steering with the car’s movement. DVSA standards require appropriate speed, positioning and control throughout bends.

How Do Uphill, Downhill and Camber Affect the Manoeuvre?

Uphill

An uphill approach can reduce speed quickly. A manual car may need a lower gear.

If you stop, secure the vehicle against rolling backwards. Use the parking brake or appropriate holding system and allow for the extra time needed to move off uphill.

Understand your car’s hill-assist limitations.

Downhill

A downhill approach can allow speed to increase. Begin slowing early and use suitable braking and gear selection.

Avoid unnecessary coasting with the clutch held down. Aim to complete most of your slowing before steering, while remaining ready to brake if needed.

Camber

Camber is the road’s sideways slope. It can influence steering, balance and grip.

Adverse camber slopes away from the inside of the turn and can make maintaining your line more difficult. Reduce speed where necessary and keep steering, braking and acceleration smooth, especially on slippery surfaces.

What Speed Should You Use?

There is no single correct speed for every T-junction.

Use a speed that allows effective observation, accurate steering and stopping within the clear distance available. The speed limit is a maximum, not a junction target.

Restricted visibility or a tight turn may require walking pace or a stop.

In a manual car, first gear is normally appropriate when moving off from stationary and may suit a very slow turn. Second may suit a rolling turn if the engine runs smoothly and control is maintained.

Do not automatically use second gear at every junction.

Where Should You Position After Turning?

After either turn, establish a normal left-hand position on the new road.

When turning right, this means reaching the correct side of the new road without cutting across its opposing lane.

Follow lane guidance, leave safe clearance from kerbs and parked vehicles, and unwind the steering smoothly. If you need to change lanes afterwards, treat that as a separate manoeuvre.

Which Mirrors Should You Check After Turning?

Once safe, update your awareness before building speed:

• Interior mirror: Assess following traffic.

• Right door mirror: Check for anyone alongside or overtaking, particularly before moving right.

• Left door mirror: Check the left side when relevant, especially before moving left or near cyclists.

Keep checks brief and purposeful, and ensure your indicator has cancelled. Official junction guidance advises checking behind after emerging and adjusting speed appropriately.

Why Continue Using MSM After the Junction?

MSM means Mirrors, Signal and Manoeuvre.

After turning, you may need to change speed or position. Check the relevant mirrors first, signal where it would help others, and then carry out the movement safely.

You do not need an indicator simply to accelerate. Signals should communicate a useful intention.

The routine maintains your awareness as new hazards develop.

What Should You Do About Parked Vehicles?

Assess parked vehicles before committing to either turn. Ensure there is room to enter without becoming stranded across the junction.

Where your side is obstructed, wait for approaching traffic before moving around the obstruction.

Hold back with enough room to see and move out smoothly. Check mirrors and relevant blind areas before changing position.

Allow for opening doors and people appearing between vehicles. Reduce speed when clearance is limited, and wait if the gap is unsafe.

Before returning left, ensure the whole car has passed the obstruction and that the space is clear.

What If an Approaching Vehicle Is Already in Your Lane?

If you are waiting at the junction, allow it to clear before emerging.

If you have already turned, slow down and stop if necessary. Leave room for the situation to resolve.

Move left only when there is safe space. Do not mount the pavement or squeeze a cyclist to get through.

Even if the other driver should have waited, avoiding a collision comes first. Never accelerate towards them to insist on priority.

Remember the Three Routines

Prepare with MSPSL. Decide with LADA. Continue using MSM.

Whether turning left or right, prepare early, keep observing and proceed only when you have the view, space and control needed to complete the manoeuvre safely.

Practise these skills with your driving instructor and adapt them to your vehicle and the road conditions.

Learn with Let’s Pass 1st®

Build your confidence with guided practice in approaching junctions, judging gaps and turning safely. Contact Let’s Pass 1st® to discuss your driving lessons.

Sources and further reading

• The Highway Code — Using the road

• The Highway Code — Rules H2 and H3

• Safe Driving for Life — Car driving: junctions

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