It depends on the city. My nearest metro does enforce them... at locations for which a particularly large number of people are wont to illegally cross, such as around the University.
Otherwise, enforcement is spotty at best, because the police have better things to do, such as ticket parked cars with expired tabs or meters.
If there were a sudden uptick in pedestrian-car collisions, you can bet they'll crack down.
None of the above addresses whether the law SHOULD be on the books, which is what people should put their efforts towards changing, if they feel is unjust. Protesting car companies that make self driving cars because they don't like an already existing set of laws is just misguided at best, and intellectually dishonest at worst.
Otherwise, enforcement is spotty at best, because the police have better things to do, such as ticket parked cars with expired tabs or meters.
If there were a sudden uptick in pedestrian-car collisions, you can bet they'll crack down.
None of the above addresses whether the law SHOULD be on the books, which is what people should put their efforts towards changing, if they feel is unjust. Protesting car companies that make self driving cars because they don't like an already existing set of laws is just misguided at best, and intellectually dishonest at worst.