The federal panel determined that the long-held practice violates the Fourth Amendment, which protects people against unreasonable searches of their property.
Chalking Tires To Issue Parking Tickets Violates The Fourth Amendment, Federal Court Rules
Court case causes Aspen parking department to chuck chalk; Glenwood evaluating
Federal court: Chalking tires for parking enforcement is unconstitutional
Chalking tires is unconstitutional, federal judge rules, but plaintiffs won't get traffic-ticket refunds as damages
Court rules 4 states must stop marking tires when enforcing legal parking - ABC7 San Francisco
Tire-chalking not unconstitutional in the Valley
Milwaukee reviewing chalking ticket policy
What Does Chalking Tires Have to Do With the Fourth Amendment? - Pacific Standard
Milwaukee reviewing chalking ticket policy
Judge Rules Chalking Tires Is Unconstitutional Search
City of Jefferson stops chalking tires as part of parking enforcement after court ruling
Tire Chalking Is Legal, at Least Here
Chalk one up for motorists - Delaware Gazette