A research was held by the U.S Department of Transportation Federal Highway Administration in October 2014.Purpose of this research was to examine the behavior of drivers and accident effects of rising and lowering posted speed limits on non limited access of rural, urban highways, turnpikes and thruways. According to this survey permission was given by twenty states and changes the sign board for 65 miles per hour speed limit and allow the biker and other drivers that they can drive their vehicles up to 65 miles per hour. After altering the law the study showed much increase in accidents and misbehaviors by the bikers. Drivers are already use high speed driving to save time and ignore all the rules on road turnpikes and thruways. When such a rule will be declared by the government then it will give more relaxation to drivers and they will violate more traffic rules.