Hazard perception is part 1b of the theory test for lorry, bus and coach licences. You watch 19 clips from the driver’s seat and click the moment you see a hazard start to develop. Try one of our practice clips below, then read how the scoring works so nothing on the day surprises you.
It is the second half of the theory test for LGV (lorry) and PCV (bus and coach) licences. The first half, part 1a, is the multiple-choice paper. You book the two halves separately, you can sit them on the same day in either order, and you need to pass both within two years of each other to get your theory test certificate.
You sit it on a computer at a theory test centre and click with a mouse. There are 19 clips. Each one is a computer-generated drive seen from the driver’s seat, and none of them has any sound.
DVSA describes a developing hazard as something that would cause you to take action, like changing speed or direction. A car parked at the side of the road is not one. The same car with its indicator on and its wheels starting to turn is.
That is the whole skill: spotting the moment a situation changes from something to keep an eye on into something you would have to respond to.
Click as soon as you see something start to develop. If it keeps developing, click again a moment later. Two or three considered clicks for one hazard are fine, and they make sure one of them lands inside the scoring window.
What you must not do is click steadily all the way through a clip. That is what scores zero.
The clips in our Learning Hub are seen from the driver’s seat, like the real ones, and they are rebuilt every time you play them. The hazard, the traffic and the timing all change, so you learn to read the road instead of remembering a clip.
After each clip a replay shows you when the scoring window opened, where your clicks landed and which clues you could have used. When you are ready, the full mock is 19 clips and 20 hazards, marked out of 100, the same shape as the real test.
These are our own training scenes, not DVSA test clips, and no practice can promise a result. They are there to build the skill the test measures.
67 out of 100. There are 19 clips with 20 developing hazards, and each hazard is worth up to 5 points.
It works the same way, but it is longer and the pass mark is higher. The car test has 14 clips and a pass mark of 44 out of 75. The lorry, bus and coach test has 19 clips and a pass mark of 67 out of 100.
You do not lose points for the odd wrong click. But if you click continuously or in a pattern, you score zero for that clip.
Yes. For lorry, bus and coach licences the two parts are booked separately, and you can sit them on the same day or on different days. You need to pass both within two years of each other.
Yes. You need to have passed both parts of the theory test before you can book your practical driving test.
The Learning Hub is free. Nineteen clips, twenty hazards, scored out of 100, with a replay of every clip. Or call our friendly team and we will talk you through your whole route.
Open the free Learning Hub · Transparent course pricing · Funding and payment plans · Find your nearest centre · Call 01634 907 229
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