State and Interstate highways in Arapahoe County are patrolled by the Colorado State Patrol. Arapahoe County east of E-470 and north of approximately US Highway 6 is in Colorado State Patrol Troop 1A and the remainder of the county is in Colorado State Patrol Troop 1C.
In Arapahoe County, the Colorado State Patrol primarily operates on DTRS. At times, the conventional VHF CSP channel 3 is used for car-to-car communications.
All City of Aurora government communications, including the Aurora Police Department and the Aurora Fire Department, take place on the City of Aurora EDACS system.
The Cherry Hills Village Police Department operates on the DTRS. The Cherry Hills Village Police Department is dispatched on the Arapahoe County sheriff Department main dispatch talkgroup.
The Littleton Police Department and the Littleton Fire Department operate on DTRS. The Littleton Fire Department uses some simplex frequencies for fireground communications.
Parker-South Metro Fire Rescue Authority provide fire and emergency medical services to the cities of Cherry Hills Village, Greenwood Village, Lone Tree and Parker, as well as portions of the city of Centennial, all in the Denver-metro area. Communties we serve in Douglas County include Castle Pines Village, Castle Pines North, Surrey Ridge, Beverly Hills, McArthur Ranch, Daniels Gate, Happy Canyon and Louviers. We also serve most of the Denver Tech Center and Inverness, Centennial Airport and the Park Meadows area.
The Parker-South Metro Fire Rescue Authority operates on DTRS. The Parker-South Metro Fire Rescue Authority uses some simplex frequencies for fireground communications.
The Sheridan Police Department operates on DTRS. The Sheridan Police Department is dispatched on the Arapahoe County Sheriff's Office main dispatch talk group.
