(1) Except as provided in (3), an emergency medical service must take measures to assure that the carbon monoxide level in a ground ambulance does not exceed ten parts per million accumulation at the head of the patient stretcher. The service must continuously maintain in the patient compartment:

(a) a disposable carbon monoxide detector, approved by the department, which is capable of immediately detecting a dangerous rise in the carbon monoxide level; or

(b) an electronic carbon monoxide monitor.

(2) Services that use a disposable carbon monoxide detector must also:

(a) write on the detector the date of its placement; and

(b) keep replaced detectors for a period of three years.

(3) An emergency medical service is not required to maintain a carbon monoxide detector in a diesel powered ambulance.

(4) Windshields must be free from all cracks within the windshield wiper coverage area.

(5) Tires must have at least 4/32 inch of tread depth, measured at two points not less than 15 inches apart in any major tread groove at or near the center of the tire.

(6) No one may smoke in a ground ambulance.