Know one major US city where the state police ran a campaign on the various interstates entering that city (and the surrounding unincorporated roads) where they

Know one major US city where the state police ran a campaign on the various interstates entering that city (and the surrounding unincorporated roads) where they were writing tickets for lights that violated state law. Went on for a few months and there was backlash (from suburban teens families) to the right folks in the state that got them to stop the campaign.