DSA Hazard Perception Test
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The DSA Hazard Perception Test is a test administered by the DSA which UK learners must pass to obtain a full driving licence. It was introduced in November 2002. The scientific input behind the test is provided by the Transport Research Laboratory.
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[edit] Format
Examinees watch fourteen one-minute clips filmed from the perspective of a car driver and have to indicate, usually by clicking a mouse button or touching the screen, when they observe a developing hazard. All of the clips will include one developing hazard, and one will include two such hazards. The sooner an examinee reacts to a developing hazard, the more points are scored, from five down to one, with no score if the examinee reacts too late. Excessive clicking will result in that question's score being discounted from the total (the exact threshold is 25 clicks in each clip). The maximum score possible is 75.
For the purposes of the test, a "developing hazard" is defined as something which requires the driver to adjust speed and/or direction. Potential hazards are hazards that no immediate action needs to be taken, but are worth observing in case their status changes. Clicking on potential hazards is acceptable, but the scoring window only opens if that hazard develops, thus examinees have to remember to react if the status of a hazard changes, and not just when the potential hazard is first spotted.
It is usually immediately preceded by a theory test. Having passed these two exams, it is necessary to pass a practical driving test in order to obtain a driving licence.
[edit] Pass Mark
The pass mark depends on the licence applied for:
- Cars and motorcycles: 44/75
- Buses and lorries 50/75
[edit] Comments
Transport Minister Stephen Ladyman has said that the introduction of the hazard perception test was one of the "most significant changes" to the driving test,[1] and claims that "Research has identified this [competence at recognising hazards] as a key road safety skill."[2]
