(a) No person or operator shall stop an ice cream truck for the purpose of selling or offering for sale any frozen dessert products, or to sell or offer for sale such products at such ice cream truck while stopped, or to use any loudspeaker, bell, or other device giving an audible signal to advertise frozen dessert products, on any street or public right-of-way abutting any real estate which is then used as part of the school grounds of any public or private grade or junior high school between the hours of 7:00 a.m. and 4:00 p.m., on days when such school is in session.
(b) No person or operator of any ice cream truck shall use more than one loudspeaker, bell, or other device, and such loudspeaker, bell, or other device shall not have the capability or capacity to emit a signal louder than eighty decibels at full volume measured at any distance from such device for the purpose of advertising to the general public the product, or presence of the ice cream truck.
(c) No person or operator of any ice cream truck from and at which frozen dessert products are being sold shall use any loudspeaker, bell, or other device giving an audible signal to advertise such products or the presence of the vehicle while the ice cream truck is in motion.
(d) No person or operator of any ice cream truck shall stop such ice cream truck for the purpose of selling or offering for sale frozen dessert products without having the following equipment mounted on the ice cream truck and in operation during the period of selling frozen dessert products:
(1) There shall be two warning lights. Each warning light shall be double-faced, yellow in color, and not less than six inches in diameter. One light shall be mounted on the roof near the left center of the roof line, and the other light shall be mounted on the roof near the right center of the roof line.
(2) When operating, the lights shall flash and be clearly visible from both the front and rear at a distance of at least 300 feet.
(3) The lights shall be operated when the motor vehicle is stopped for the purpose of selling or offering for sale any food products and at no other time.
(4) There shall be two warning signs. Each warning sign shall carry the legend "CHILDREN" on the top line and "PROCEED WITH CAUTION" on the bottom line in five-inch, black, block letters on a yellow background.
(5) The signs shall be a minimum of fifty inches in width and twenty inches in height. One sign shall be located on the front end of the vehicle, and the other located on the rear end of the vehicle.
(6) The signs shall not extend more than two feet above nor two feet below the top roof line of the vehicle.
(7) The signs shall be located transversely so as not to obstruct the two warning lights.
(8) The signs shall form a complete warning unit with the two warning lights that can be clearly visible by motorists who approach such vehicle from the front and rear.
(e) No motorist, when approaching a ice cream truck from any direction at a time when such ice cream truck has the yellow warning lights operating, shall fail to proceed with caution to pass such ice cream truck.
(f) No person shall sell or offer for sale any frozen dessert products from an ice cream truck unless that ice cream truck is legally parked, or shall sell or offer for sale from other than the curbside of the legally parked ice cream truck.
(g) No person shall engage in selling or offering for sale frozen desserts from and at an ice cream truck between 9:00 p.m. and 9:00 a.m.