Section 2 AAC 91.090 - Instruction vehicle identification(a) A motor vehicle or commercial motor vehicle used by a driver training school for instruction or testing purposes must display on the vehicle a sign as described in this section.(b) A sign required under this section must (1) include lettering and background colors that contrast to ensure that the sign is clearly readable at 100 feet in clear daylight;(2) be at least 20 inches wide and at least 20 inches high;(3) be mounted above the upper extremities of the rear bumper in a vertical position and have the words "Student Driver," "Instruction Car," or "Instruction Truck" at the top of the sign in legible English letters that are at least two and one-half inches high;(4) display the name, street address, and phone number of the school in legible characters at least one inch high.Eff. 7/1/2006, Register 178; am 1/12/2018,Register 225, April 2018