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United Kingdom · Theory test

HGV hazard perception test and practice

The real test is 19 video clips, scored out of 100, and you need 67 to pass. It’s part 1b of the theory test for heavy goods vehicle (HGV), bus and coach drivers, so you book and pay for it apart from the multiple-choice part. For HGV hazard perception test practice, GOV.UK points you to 3 free clips on Safe Driving for Life, and the Driver and Vehicle Standards Agency (DVSA) also sells a full guide.

  • 19Video clips in the real test
  • 5Top score for one hazard
  • 67 of 100Points needed to pass
Try 3 free hazard clips

Updated November 2026 · Written from official sources, listed at the bottom of this page

How the HGV hazard perception test works

First you watch a short video on how the test works. Then the 19 clips play, each one an everyday road scene. Every clip has at least one developing hazard, and one of them has two.

A developing hazard is something that would make you change speed or direction. GOV.UK’s example is a parked car. While it’s just sitting there, it’s not a developing hazard. When its right indicator starts to flash and it begins to move away, you’d need to slow down, and it is one.

How the points work

  • The sooner you click after a hazard starts to develop, the more points you get.
  • A wrong click doesn’t lose you any points.
  • Clicking all the time or in a pattern scores nothing on that clip.
  • You get one go at each clip, with no way to review or change your response.

Safe Driving for Life lists a higher pass mark for large vehicle drivers than for car drivers: 67 out of 100, against 44 out of 75.

The car hazard perception test →

Where can you get HGV hazard perception test practice?

OptionPriceWhat you get
Safe Driving for Life testFree3 clips, 9 points to pass
DVSA Hazard Perception app£2.99 on iPhoneFrom DVSA’s publisher, also on Android
DVSA guide, onlineFrom £10Over 130 clips, for 30 to 365 days
Theory test kitsFrom £25Revision questions plus over 130 clips

The Stationery Office (TSO) publishes these for DVSA. GOV.UK says the free clips aren’t used in the real test, but they show you how it works.

Official guide, online ↗App for iPhone ↗App for Android ↗

If you’ve already passed the multiple-choice part

Both parts need to be passed within 2 years of each other. Fail hazard perception and you only rebook that part, at least 3 clear working days later. The certificate comes once you’ve passed both.

How the theory test works →Book hazard perception →
Sources: GOV.UK · Safe Driving for Life · Apple App Store and 2 more. Checked November 2026.

Rules and fees can change, so check the official site before your test.

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