that sounds a bit backwards because if you are out between 11pm and 7am is there not less risk ie less cars on road more space to move and not hit anything where as rush hour can be a high risk area lots of cars all in a rush to get some where i persanlly always find it less stressfull driving at night rather then during the day never seams to be the ****s that want the next exit cutting across you because the out side lane is moving 1/2 mph faster
younger drivers are more risk at night, generally the drunks were also crashing at that time too, people falling asleep at wheel etc-my experience of recovery work.