Speeding tickets generate revenue for the city or county in which they’re issued. If the police department is low on revenue, they’ll set up a speed trap on a busy road and lie in wait for the non-violent speed violators. If the city is really desperate, they’ll invest in a speed camera system that will be distributed around the city and send citations to the registered owners of the alleged speeding vehicles. And if they’re still not happy with the money they’re making, they’ll start issuing speeding tickets to people who aren’t even speeding. In Baltimore, Maryland, they’ve generated over...