PASADENA, Calif.–Motor homes, trailers and other large vehicles parked along the route of the Rose Parade will be visited by Pasadena police beginning Wednesday as part of a block-watch-type campaign to ensure parade-goers are complying with regulations and looking out for scofflaws.

The 10th annual Parade Watch operation began as a security measure instituted after the 2001 terrorist attacks, according to Pasadena police.

“This program has allowed the Pasadena Police Department the opportunity to reach out to hundreds of people personally,” said Police Chief Phillip Sanchez.

“It is community policing practiced in one of Pasadena’s finest moments and we believe that it is a critical component in the safety and security of the parade route,” he said.

All vehicles parked within a block of the parade route are subject to being searched, he said.

Vehicles cannot be left unattended overnight within a block of the parade route. Unattended vehicles could be towed.

People whose vehicles are visited by police will receive a commemorative 2011 Pasadena Police Department Parade Watch decal for the vehicle.

Anyone seeing anything suspicious along the parade route was asked to call (626) 744-4241.