How must a registered tow truck operator identify its vehicles?

(1) All tow vehicles to be used in the operator's business which are operated on the public highways, must display the licensee's operator number plus the truck number, name, city of address and current business telephone number. Such information must be painted or permanently affixed to both sides of the vehicle. Each letter and numeral must be made with at least a half-inch stroke for the width and must be at least three inches high. See sample:

(2) The annual tow truck permit will be a paper cab card identifying the tow truck as well as indicating the class of truck and the registered tow truck operator.