331.34 SLOW-MOVING VEHICLES OR EQUIPMENT AT GRADE CROSSINGS.
   (a)   No person shall operate a vehicle without exercising reasonable and ordinary control over such vehicle.
   (b)   No person shall operate a vehicle in a weaving or zigzag course unless such irregular course is necessary for safe operation or in compliance with law.
   (c)   No person shall operate a vehicle without giving his full time and attention to the operation of such vehicle.
   (d)   Whoever violates this section is guilty of a minor misdemeanor on a first offense; on a second offense within one year after the first offense, the person is guilty of a misdemeanor of the fourth degree; on each subsequent offense within one year after the first offense, the person is guilty of a misdemeanor of the third degree.