Habré, probably quite a few people who regularly ride a bike on the road. Well, if there is a track for cyclists, but more often than not, but the attitude of motorists towards cyclists not always be called respectful.
As a result, cyclists are often faced with a situation where the car appears as if from nowhere, and the noise drives past, almost knocking the fan cycling on roads. And mirrors for steering / helmet not always help.
To make driving safer system was established Backtracker, advance warning of the approaching cyclist behind cars.
