According to wikipedia > The maximum speed limit on Interstate Highways is 75 mph (121 km/h). This limit may be applied outside of "urbanized areas", where spe

According to wikipedia > The maximum speed limit on Interstate Highways is 75 mph (121 km/h). This limit may be applied outside of "urbanized areas", where speeds of over 85 mph (137 km/h) on any highway (regardless of the posted speed limit) is considered a criminal (rather than civil) offense.