If you’re driving towards a blind crest or corner, how do you judge a safe approach speed? Is there a safety formula? ‘Matching speed to vision’ means being able to stop within the distance you can see to be clear ahead. In effect, the less you can see, the slower you should drive – and always think ‘what if? a matter of controlling your own safety when vision is limited – a safety formula for every situation.


When vision is restricted, always expect the unexpected.