Checked against DVSA guidance on GOV.UK in October 2026.
Why it matters so much
The DVSA publishes the top 10 reasons for failing the driving test. For April 2024 to March 2025, "not making effective observations at junctions" was number one. The same publication notes that ineffective observation by a driver, rider or pedestrian was a factor in 47% of all collisions in 2023.
Faults in this area appear on your result as "Junctions - Observation".
What "effective" means
The DVSA says you must always make effective observations before moving into a new road, and make sure it is safe before you go. The key word is effective. Turning your head isn't enough: you need to see what's there, judge its speed and distance, and act on it.
The DVSA's examples of mistakes that count towards this fault show the difference:
- Misjudging speed. You look, but pull out in front of an approaching vehicle and force it to slow significantly.
- Looking too late. You look left or right only once you're already partly into the new road.
- Not recognising a junction. You go straight over a crossroads without looking left or right.
- Not looking left when turning left. Throughout the test, you turn left into a busier road without checking left, so you don't see parked vehicles or other hazards.
- Slip roads. You join a dual carriageway from a slip road without observations, or without giving way to traffic on the main carriageway.
- Roundabouts. You enter when a vehicle is approaching from the right and it has to slow down.
How the examiner marks it depends on what happens. The DVSA's marking guide gives a driving fault for misjudging an approaching vehicle when safety isn't compromised, a serious fault for emerging into the path of other vehicles without effective observation, and a dangerous fault when it causes actual danger.
Use a routine at every junction
Examiners expect a structured approach to every junction. The marking guide names two routines that work together:
- Mirrors, signal, manoeuvre (MSM): check the mirrors, signal clearly and in good time, then carry out the manoeuvre.
- Position, speed, look (PSL): position the car correctly and in good time, adjust your speed, then look, assess the situation and act on it.
Speed is where good observation starts. If you approach a junction too fast, you don't have time to look properly. The DVSA lists approaching a junction too fast, making it difficult to make observations, among the most common junction faults.
Stop signs, give way lines and pedestrians
At a junction with a stop sign and a solid white line, you must stop behind the line, even if the road looks clear (Highway Code rule 171). Where there are broken white lines across the road, you must give way to traffic on the main road (rule 172).
Rule 170 adds more for every junction:
- watch out for cyclists, motorcyclists and pedestrians, who are not always easy to see
- give way to pedestrians crossing or waiting to cross the road you're turning into or out of
- don't assume a vehicle coming from the right and signalling left will actually turn
- look all around before emerging, and wait for a gap big enough to go safely
Where the view is restricted
Parked cars, hedges and buildings often block your view at the give way line. Look as you approach, then edge forward slowly until you can see properly, and look both ways again before committing. Your first look tells you what was there a few seconds ago. Your last look, just before you move, is the one that matters.
At dual carriageways, rule 173 says to check whether the central reservation is deep enough for your vehicle. If it is, treat each half as a separate road and wait in the middle for a safe gap. If not, wait until you can cross both in one go.
Don't overcorrect
Being too cautious is marked too. "Progress - Undue hesitation" covers not emerging from a junction when it's safe, and waiting for a road user who has clearly given way to you. The aim is a confident decision based on what you've seen, not a long wait.
You also don't need to exaggerate your head movements. The DVSA's driving test myths page says examiners are trained to spot proper observation, and putting on a show can distract you from what's actually there.
Building the habit
- Ask your instructor to tell you each time you look too late or too briefly.
- Practise on unfamiliar roads, where you can't rely on knowing what's coming.
- Say out loud what you can see as you approach a junction: it shows you whether you're looking early enough.
Questions
What is the most common reason for failing the driving test?
Not making effective observations at junctions. It is first in the DVSA's top 10 reasons for failing the car driving test in Great Britain for April 2024 to March 2025.
Do I need to exaggerate my head movements so the examiner sees me look?
No. The DVSA says examiners are trained to make sure you are making proper observations. Concentrating on exaggerated head movements can make you miss something more important.