In a recent road accident at midnight, where 25 passengers of the bus died, one of the reasons mentioned is road hypnosis.
Information extracted from internet:
What Causes Drivers to Experience Highway Hypnosis? Drivers may become hypnotized by the monotony of the road, such as an empty highway with an endless white line. This phenomenon is especially common when drivers travel for long distances on open highways with little traffic.
By going through the above, all of us must have experienced this at one time or another on many occasions.
How to prevent drivers from going into such trance-like situations and make them physically aware of their surroundings appears to be having series of road humps which are small height (maybe one inch) barriers for every one kilometer or so. The jerks of the vehicle while passing on these make the drivers come to aware of their surroundings and be alert.