
			Pittsburgh driver's test

(5) Your car's horn is a vital piece of safety equipment.  How often should
you test it?

	(a) once a year.
	(b) once a month.
	(c) once a day.
	(d) once an hour.

The correct answer is (d). You should test your car's horn at least once
every hour, and more often at night or in residential neighborhoods.
