Drivers most at risk of high speed collisions in early hours 

Drivers using the roads in the early hours of the morning are most likely to be involved in a high-speed collision, according to research by In-Car Cleverness (ICC).
ICC analysed data from 897 rental cars to show that the speed of vehicles involved in a collision peaks at 2am, when the impact speed of accidents hits an average of 36mph.
The speeds at which accidents occur increase steadily from the early evening, starting at 24mph at 8pm and rising by 53% over the next six hours. However, the highest collision speed recorded was 100mph, from a crash that happened in the evening rush hour.
The research also shows that the dangerous G-forces involved increases significantly along with the impact speed. Some 1am collisions recorded G-forces of up to 5.6.
http://www.fleetnews.co.uk/news/2014/12/2/drivers-most-at-risk-of-high-speed-collisions-in-early-hours/54218/