The hazard perception test consists of 14 video clips that each show a developing road hazard. Candidates must click their mouse as soon as they see each hazard in order to score points. Scoring is on a scale of 1 to 5 points depending on when the candidate responds during a scoring window around the hazard. Responding too early or too late will score zero points, as will multiple unnecessary responses. The goal is to identify hazards such as pedestrians, vehicles merging, changes in traffic conditions, and poor weather or road conditions.

1. Hazard perception test
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2. Hazard test
• Hazard perception test forms a second
section of the theory test
• 14 hazard clips of approximately 1 min
each
• 14 hazard clips – 15 hazards
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3. How to score
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4. How the scoring mechanism works ?
• Each scoring window is divided into five equal segments and a score of five through to one
allocated to each. Those responding in the first segment of the scoring window will score 5 and
those in last segment a score of 1. Responses outside the window will score zero.
If you click the mouse while in the first segment (i.e. just as the developing hazard appears) you
will obtain the maximum score of 5 points. If you click in the second segment of this window of
time you will score 4 points, then 3, then 2 and then in the last segment just 1. This is accurate to
one twenty fifth of a second.
If you click the mouse button too early, before the potential hazard becomes what the DSA term a
“developing hazard”. Your score will be 0. Therefore to ensure you get a maximum score in the
hazard perception test challenge, you should fully understand the DSA term “developing hazard”
as opposed to “potential hazard”
If you click several times during this window of time the computer will always take your highest
score and record that for that particular clip.
If you don’t click the mouse button in this window of time you will score nothing in respect to that
hazard. If lots of unnecessary responses are made in a very short space of time, or throughout the
clip, a zero score will recorded for that clip.
If this happens a warning message will be shown on the screen at the end of the clip.
When the clip ends the screen will turn black for a few seconds before the freeze frame for the
next video clip appears and the count down commences again, warning you to get ready. This
pattern is repeated until all 14 video clips have been shown.
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5. Look for these hazards
• pedestrians or cyclists crossing the road
• vehicles emerging from side roads, parking places or driveways
• large vehicles moving over to your side of the road
• meeting oncoming vehicles on narrow roads or where other obstructions or
slow moving vehicles make the road narrow
• loose pets and farmyard animals
• changes in the traffic movement and volume
• junctions and roundabouts
• horse riders
• weather conditions of the day
• road surfaces
• parked vehicles
• hidden junctions & turns
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6. Wish you all the best for
your driving test !
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