The parade route is divided into five zones, with each zone assigned an LASD tac channel.
Tac usage changes yearly but the will use the Tacs that provide the best coverage including ATAC1, ATAC3, Ctac1, CTAC2, and mutual aids 1,3,4,5
The parade staging area on Orange Grove and Old Towne area of Colorado Bl are usually the Red Zone.
LASD is contracted to handle all calls occurring about 2/3 mile wide strip along Orange Grove and about three blocks on each side of Colorado Blvd to the east.
Red Zone is busy pre-parade due to all the drinking establishments in Old Towne..
The easternmost zone at the end of the parade is Brown Zone and I can't remeber the other three off hand.