Chandigarh, June 26 -- A special 15-day statewide drive against the illegal use of hooters, sirens, flashers and black films on vehicles has resulted in over 39,000 challans, officials said on Friday.

Special director general of police (DGP, Law and Order) Praveen Sinha said police teams checked 1,79,980 vehicles across the state during the drive, launched on the directions of DGP Gaurav Yadav.

During the operation, officials removed 202 hooters, 49 sirens and 2,430 flashers from vehicles found using them without authorisation. Illegal black films were also removed from 2,445 vehicles on the spot.

In all, 39,872 traffic challans were issued and 412 vehicles were impounded for violating traffic regulations.

Sinha said hooters, sirens a...