That's because humans tend to be somewhat predictable and repetitive idiots.
The Cat and Fiddle (the A537 between Buxton and Macclesfield) is a prime example. One of my colleagues and her husband are bikers (her husband is an instructor). Her husband also works for the ambulance service covering that road.
Over the years the authorities have tried to reduce the number of bikers killing themselves on that road. The steps taken include:
- introduction of a 50mph speed limit;
- a mobile road safety campaign;
- re-laying the road surface;
- putting anti-skid surface on bends;
- building motorcycle-friendly crash barriers; and
- installing average speed cameras.
Yet you still get bikers racing over that road at well over the speed limit and in a totally stupid manner - often filming themselves as they go and posting the results on YouTube (try searching for 'Cat and Fiddle' on YouTube) - and bikers keep dying, despite all the changes.
Is that the fault of the road? No. As he'll tell you, it's the way that the road is ridden that is dangerous. Each time they get a shout and it's a biker, you can guarantee the accident investigation will find the rider at fault.