(a) A tow truck permit holder must display on each permitted tow truck:(1) the permit holder's name;(2) the permit holder's publicly listed telephone number;(3) the city and state where the permit holder is located; and(4) the permit number for the tow truck.(b) The information required to be displayed must be:(1) printed in letters and numbers that are at least two inches high and in a color that contrasts with the color of the background surface; and(2) permanently affixed in conspicuous places on both sides of the tow truck.