No driver shall allow anyone, other than employees of the Employer who are on duty, to ride on his truck except by written authorization of the Employer, or except in cases of emergency arising out of disabled commercial equipment or an Act of God.  No more than two (2) people shall ride in the cab of a tractor unless required by government agencies or the necessity of checking of equipment.  This shall not prohibit drivers from picking up other drivers, helpers or others in wrecked or broken down motor equipment and transporting them to the first (1st) available point of communication, repair, lodging or available medical attention.  Nor shall this prohibit the transportation of other drivers from the driver’s own company at a delivery point or terminal to a restaurant for meals.