Citizens must honk their horn while passing other cars.

Since the 1960s, the city has banned people from parking their pickup trucks in their driveways or on city streets from 7 p.m. to 7 a.m. After Aug. 8, 2011 Coral Gables will start issuing tickets to people who violate the parking ban. The first violation will cost $100. Afterward, code enforcement officers can issue tickets up…