Traffic laws are enforced by police officers who stand on the side of the road. They carry wands with white stripes on them. When they point at a car, the driver pulls over. It doesn't matter how heavy the traffic, how fast or how many lanes the driver must cross, the car will be parked within feet of the officer. But few drivers get tickets.
Most people pay curbside.
One traffic law police take seriously is drunken driving. Failure to take a drunken driving test means your license and car are taken away. Getting both back is expensive and apparently something of a miracle.