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. However, make sure you only click in response to changes you see. Hence, it would be normal to click 2, 3 or possibly 4 times as the hazard evolves. This will ensure you score the maximum for each clip even if you click too early as you anticipate a hazard rather than responding to its development. The official hazard perception test introduction video clip recommends that you click the mouse button each time you detect a change as the hazard materialises, not just once when you think you have seen it start to develop. If this is detected a message window will appear at the end of the clip letting you know that an irregular clicking activity was detected and that as a result the score for that clip will be zero. The computer program also looks for any pattern of repeated clicking or a short burst of rapid clicks. There is a certain maximum number of clicks permitted per clip but this is believed to be over 20 clicks. If you try to cheat the system by clicking the button repeatedly the program will pick this up by looking at the number of clicks over the clip as a whole and the pattern of clicks. Within the scoring window if you click several times only the first click will be used to determine your score (i.e.
If you don't click the mouse in this window of time you will score nothing in respect to that hazard. This is accurate to one twenty fifth of a second. 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. just has the potential hazard starts to materialise) you will obtain the maximum score of 5 points. If you click the mouse while in the first segment (i.e. This window of time is divided into 5 equal segments. The time from when the potential hazard starts to develop to when the vehicle arrives at the hazard is the time frame or window used to determine your score. The score you obtain will be dependant upon how quickly you spot the potential hazard as it materialises and therefore develops.
#Pratice hazard perception test driver#
that required the driver to take some form of action to avoid the hazard). Although each clip contains several potential hazards only the one that materialises into a real hazard and involves another road user is marked (i.e. At the end of the clip all the flags will be removed before you start the next clip.
To let you know that the program has registered your click a red flag will appear on a grey band across the bottom of the screen - one flag for each click you make in any particular clip.
At the end of the count down the clip will start to play and you will be required to click the mouse each time you see a potential hazard start to develop and each time any additional evidence appears to support that development. The clips will not contain any sound - just like the old silent movies.Įach clip will start with a freeze frame of the start of the video and a count down from 10 will commence. However, one clip will have 2 developing hazards. There will be 15 developing hazards to find - at least one on each clip. You would then be shown 14 hazard perception video clips of approximately one minute each. The above video explains how the hazard perception test works and what you are required to do.
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