Last week’s crash in Brooklyn that killed two children has revived calls for a crackdown on traffic violations across the city. But an analysis of city data shows how difficult it has been for law enforcement to deter even the most egregious offenders.

City records of violations issued by automated red-light and speed-zone cameras show that the license plate that was on the car involved in last week’s deadly crash had been cited four times for running red lights and four times for speeding in school zones between July 29, 2016, and the end of February 2018.

Across the city during that 19-month period, more than 19,000 license plates on passenger vehicles racked up eight or more violations for running red lights, speeding in school zones or a combination of the two, a Wall Street Journal analysis of the city data shows.

There were 36 license plates that were issued 40 or more of those types of citations during the period. One passenger car with a New York license plate racked up 65 violations for speeding in a school zone. A New Jersey license plate had 28 red-light citations for the same period.

Yet state law makes it possible for serial violators to avoid harsh punishment.