Various systems for measuring a car's visibility field

In his/her driving strategy, a driver looks for the information necessary f or driving the vehicle. The visual system manages most of these data which come mainly from outside the passenger compartment. Consequently, visibilit y is a very important part of safety and comfort for the motorist. However, it is not easy to point out the limits of good or bad visibility. This pap er deals with quite a few focus points regarding visibility. how to measure it, with which instruments. In this way, according to the objective data o btainable from these measures, we will be able to compare different cars to determine ergonomic features to be taken into consideration.