Extend the three-day parking limit in L.A.

Extend the three-day parking limit in L.A.

When a West Los Angeles couple returned from a five-day vacation in September, they discovered that their car had been towed from a residential street near their home. Had they flouted some posted parking regulation? No, they had violated a decades-old L.A. municipal ordinance they had never heard of that prohibits parking a vehicle on the street in the same spot for more than 72 hours. The couple have filed suit against the city, arguing that it violated their right to due process because there is no signage about the 72-hour limit.

The city's attorneys noted in their brief that "ignorance of the law is no defense" — even as they acknowledged that a sign "would...