Chalk-marking tires for parking control may be illegal

U.S. Appeals Court rules it's unconstitutional

Chalking tires for parking tickets is unconstitutional, court

Chalking tires for parking tickets ruled unconstitutional

9th Circuit Upholds Parking Enforcement Practice of Chalking Tires

Chalking tires illegal, Michigan judge says, but Saginaw gets big

Chalking tires: legal or not?

San Diego police using new system for detecting parking violations

North Bay parking police watch Michigan chalk case

Federal court case causes Aspen parking department to chuck chalk

Chalk-marking tires for parking control may be illegal

Chalking tires ruled unconstitutional in parking ticket case

What does it mean when a traffic cop “chalks” your tires? - Quora