An Act amending Title 75 (Vehicles) of the Pennsylvania Consolidated Statutes, in general provisions, further providing for definitions; in licensing of drivers, further providing for suspension of operating privilege; in rules of the road in general, further providing for overtaking vehicle on the left and providing for vehicles passing pedestrians on a highway; in special vehicles and pedestrians, further providing for penalty for violation of subchapter; and, in miscellaneous provisions, further providing for the offense of careless driving.