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Illinois Department of Transportation (IDOT) (IL)

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Related Information

Road Condition Codes

  • Code 1: All Clear – Pavement is clear of ice and snow.
  • Code 2: Scattered – Scattered slick spots on pavements and bridge decks, or wet freezing pavements.
  • Code 3: 75% Bare – Pavement clear except for a narrow strip on the edge.
  • Code 4: 50% Bare – When a strip of ice or packed snow, some 4’ wide, remains in the center of the pavement with a 2’ to 3’ strip along each edge.
  • Code 5: 25% Bare – When there is a narrow strip of bare pavement from 6” to 2’ in each lane where the tires travel.
  • Code 6: Snow Covered – When the pavement on a route or portion of the District is covered with ice or packed snow.

STARCOM21 Usage

IDOT Yard Starcom21 Talkgroups Map - Click image to view in full
IDOT Yard Starcom21 (District 1) Talkgroups Map - Click image to view in full

Identified Talkgroups Most districts in the state are using Starcom21 for their radio communications.

10/13 - McHenry Co. Primary, 453.4875, has been replaced by 453.6375 in a modification to callsign WQPX735. Please submit if this has been confirmed as in use. [8/13 - need update] F1 (150.995) and F8 (453.4) are simulcast. Other channels can be patched as needed.

There is a shorthand way of referring to the expressways so that NW @ Harlem is understood as outbound JFK @ Harlem. NW & SE = JFK E & W = IKE NE & SW = I 55 N & S = Dan Ryan & Eedens and I 57 & Ford

IDOT Emergency Patrol Vehicle's carry both UHF and SC21 radios. UHF frequencies are primary and SC21 is used as fallback. (as of 8/13) Conventional P25 Radio IDs (RIDs)

  • 743, 744, 755, 772 on 453.1875 (6/23/15)
  • 369004 - dispatcher on 453.1875 (6/23/15)
  • 369007 - Communications Consoles Emergency Traffic Patrol (Dispatcher)
  • 369008 - Communications Consoles Emergency Traffic Patrol (Dispatcher)

Radio Layout

IDOT D1 PORTABLE ZONE A LAYOUT

  • CH 1 McHenry PRI
  • CH 2 McHenry M2M
  • CH 3 McHenry SEC
  • CH 4 NORTH E. PRI
  • CH 5 NORTH E. M2M
  • CH 6 NORTH E. SEC
  • CH 7 KANE PRI
  • CH 8 KANE M2M
  • CH 9 KANE SEC
  • CH 10 CENTRAL PRI
  • CH 11 CENTRAL M2M
  • CH 12 CENTRAL SEC
  • CH 13 DOT D1 DET A
  • CH 14 DOT D1 DET B
  • CH 15 STATE WIDE
  • CH 16 DOT D1 WIDE

IDOT D1 PORTABLE ZONE B LAYOUT

  • CH 1 SOUTH PRI
  • CH 2 SOUTH M2M
  • CH 3 SOUTH SEC
  • CH 4 EXPYWAY PRI
  • CH 5 EXPYWAY M2M
  • CH 6 EXPYWAY SEC
  • CH 7 ETP PRI
  • CH 8 ETP M2M
  • CH 9 ETP SEC
  • CH 10 ADMIN PRI
  • CH 11 ADMIN M2M
  • CH 12 ADMIN SEC
  • CH 13 DOT D1 DET A
  • CH 14 DOT D1 DET B
  • CH 15 STATE WIDE
  • CH 16 DOT D1 WIDE

District 8

EPV Highway Codes

  • A -
  • B -
  • C -
  • D -
  • E -
  • F -
  • G -
  • H - I-55? (ESTL area?)

General Information

Illinois Statewide ITS Architecture Concept of Operations WEB (PDF)

In Illinois, transportation management and operations services are provided at the District level and IDOT Regions coordinate services that cross District boundaries. Each IDOT District provides transportation services that implement functions identified in the Statewide ITS Architecture. The statewide Concept of Operations leverages the existing ITS infrastructure throughout the state. Each District communicates and shares information with IDOT Central Operations (Station One), where that information is distributed to all impacted regions. In the metropolitan areas, relationships with the media to distribute real-time information are routine and include travel times, congestion and incident data where available. In parallel, the IDOT Communications group in Springfield provides centralized communications on major roadwork, weather events and critical closures. This centralization remains integrated with District-level or municipal area communications staff to ensure consistency and coordination in reporting and distribution of information to agencies and the public. While IDOT Districts 1, 4 and 8 operate 24/7/365 Communications Centers, the other IDOT districts primarily operate five (5) days per week, during business hours with on-call services for emergencies such as incidents, severe weather and major crashes. Station One coordinates reporting and response for circumstances such as hazmat crashes, emergency re-routing, AMBER Alerts, Endangered Missing Persons’ and major weather events that have broader, statewide impacts. Station One also manages major evacuation activities, and collects and distributes information regarding the status of rest areas and weigh stations.

Gateway Traveler Information System and www.travelmidwest.com has extended from a Northeastern Illinois and neighboring states system to a one stop entry point for statewide construction information, and statewide IDOT ITS device state information.

Traveler information, especially under a statewide approach, presents a number of issues and choices. A starting point for traveler information on IDOT facilities is the website, www.gettingaroundillinois.com/. The site includes links to travel condition maps for the Chicago, St. Louis and Peoria metro areas, plus bicycling, commercial vehicle and other travel information.

Illinois pioneered ITS for freeway management even before the term “ITS” was coined; here are just some examples of current freeway management systems: • The IDOT Traffic Systems Center (TSC) in Oak Park provides volumes, speeds, and occupancy information, as well as ramp meter operations information, via a connection to the Gateway and www.travelmidwest.com. The TSC also shares a connection with the ComCenter located in Schaumburg that can allow monitoring of CCTV camera feeds and control of DMS messages. • IDOT’s Operations and Communications Center (ComCenter) in Schaumburg performs centralized incident and communications coordination 24/7/365. District One’s mobile radio system utilizes multiple base stations and a mix of frequencies to cover northeastern Illinois. The ComCenter monitors, dispatches, and assists the Emergency Traffic Patrol, IDOT Maintenance, and other field forces by coordinating information with the Illinois State Police, over 350 local police and fire departments, other agencies, contractors, the news media, and the general public. Direct dedicated telephone hotlines are used for immediate communications with key agencies. Maintenance and response activities managed by the ComCenter include several pump stations that prevent expressways from flooding, traffic surveillance, weigh stations, and other systems such as DMS, HAR, pavement sensors, weather radar, and storm warning and response systems. The ComCenter also operates the Kennedy Expressway Reversible Lane Control (REVLAC) system and the Roosevelt Road ramp control system on the Eisenhower Expressway. The ComCenter receives real-time expressway information from the TSC and provides monitoring and operational support for ramp metering and DMS. The ComCenter works closely and shares information with the Illinois State Police, TSC, and Gateway through the Chicago Gateway Hub. Traffic conditions are provided to the ComCenter through protected pages on the Gateway. • Illinois Emergency Traffic Patrol (ETP) operates on Chicago area expressways, with a central facility located off the Dan Ryan Expressway in Chicago, and centralized dispatching from the ComCenter in Schaumburg. The mission of the ETP, which operates 24/7/365, is to restore traffic flow through rapid response to incidents. The ETP shares information with the Illinois State Police, TSC, and Gateway, in addition to the ComCenter through the Chicago Gateway Hub. Traffic conditions are provided to the ETP through protected pages on the Gateway. • Illinois State Toll Highway Authority (ISTHA) operates a Traffic Management Center that controls an Active Traffic management (ATM) system on 22 miles of I-90, monitors DMS and CCTV cameras, provides data to calculate travel times, and provides construction, maintenance, and incident informati

Statewide

  • Statewide for IDOT staff, small scale construction sites on flagging of traffic on US and State Highways (on a secondary basis) (will monitor for traffic and select a different frequency if in use)
  • 150-2W Portables on 453.3625, 453.4625, 453.5125, 453.5375, 453.6875, 453.7125, 458.3625, 458.4625, 458.5125, 458.5375, 458.6875, 458.7125 (NFM/P25) WSDB710

Districts

District 1 - Schaumburg (Chicagoland Area)

  • Cook, DuPage, Kane, Lake, McHenry, and Will Counties

District 1 Radio call signs and their associated yards

  • CONTROL - Dispatchers at the District 1 HQ in Schaumburg
  • 190 to 209 Landscape (L)
  • 210 to 239 Gurnee (GU)
  • 240 to 269 Grayslake and Lake Zurich satellite yard (G)
  • 270 to 299 Woodstock (W)
  • 300 to 329 Northbrook (NB)
  • 330 to 359 Edens Expressway (E)
  • 360 to 389 Kennedy Expressway (K)
  • 390 to 419 Arlington Heights (AH)
  • 420 to 449 Bridge inspectors
  • 450 to 479 Eisenhower Expressway (IK)
  • 480 to 499 Naperville (NA)
  • 500 to 529 Oak Brook (OB)
  • 530 to 559 St. Charles (SC)
  • 560 to 589 Bridge (B)
  • 590 to 619 Northside (NS)
  • 620 to 649 Hillside (H)
  • 650 to 679 Dan Ryan Expressway (D)
  • 680 to 709 Stevenson Expressway (S)
  • 710 to 739 Alsip (A)
  • 740 to 769 I-57 (M)
  • 770 to 799 Bishop Ford Expressway (BF)
  • 800 to 829 Harvey (HY)
  • 830 to 849 Joliet (J)
  • 850 to 869 I-55 and Birds Bridge satellite yard (F)
  • 870 to 899 New Lenox and Monee satellite yard (NL)
  • 900 to 969 Emergency Traffic Patrols (ETP)
  • 1420 to 1487 Sign shops (Northside, Elgin, Southside/Markham, New Lenox)
  • 1500 to 1535 Rodenberg (R)

Miscellaneous info
Yards have additional call signs and RID's not listed above, typically for portables and additional equipment. Some of those can be found on the Starcom21 wiki. Trucks have their radio ID's mounted on top, with the yard code before the radio ID. For example GU226 is from Gurnee.

  • "Minimal coverage" = quarter group AKA four trucks per yard.
  • "Night coverage" = two plows + lead worker per yard.
  • "All clear" = roads are dry, and all trucks are to return to yards.
  • Several dispatch talkgroups are patched together during snow events. These are where icing complaints, accidents, and pavement codes are aired.
  • Mobile to mobile talkgroups are not patched and are for individual yards to talk amongst themselves.

District 2 - Dixon

  • Bureau, Carroll, Lee, Ogle, Rock Island, Henry and Whiteside Counties
  • Ohio (BUREAU) for Bases on 47.14, 47.34, 47.38 Base/Mobile WQQI740
  • Compton (LEE) for Bases on 47.14, 47.34, 47.38 Base/Mobile WQQI738

Yards

  • Amboy, Belvidere, Compton, Creston, Davis Junction, Dixon, Eleroy, Forreston, Galena, Galva, Geneso, Lyndon, Lynn Center, Milan, Milan Storage, Morrison, Mt. Carroll, Oregon, Osco Storage, Rock Falls, Rockford, Roscoe, Silvis, Stockton, Sycamore, Waterman storage, Forreston storage.

District 3 - Ottawa

  • Bureau, Dekalb, Ford, Grundy, Iroquois, Kankakee, Kendall, LaSalle, Livingston Counties

Yards

  • Kankakee, Watseka, Wenona, Ashkum, Pontiac, Pontiac Traffic, Gibson City, Bloomington, Ottawa, LaSalle, Princeton, Ladd, Morris, Yorkville, Buckley, Gardner, Towanda, Reading storage, Langley storage, Dwight storage.

District 4 - Peoria

  • Fulton, Henderson, Knox, McDonough, Marshall, Mercer, Peoria, Putnam, Stark, Tazewell, Warren, Woodford Counties
  • Wenona (Marshall) for Bases on 47.02, 47.1, 47.14, 47.38 Base/Mobile WQQI745
  • Monmouth (WARREN) for 47.06, 47.18, 47.3, 47.38 Base/Mobile WQQI741
  • Farmington (FULTON) for 47.06, 47.18, 47.3, 47.38 Base/Mobile WQQI461

Yards

  • Aledo, Biggsville, Brimfield, Monmouth, Edwards, Morton, Hopedale, Knoxville, Wyoming, Lewiston, Macomb, East Peoria, El Paso, Wenona, West Peoria, Sparland storage, Farmington storage.

District 5 - Paris

  • Champaign, DeWitt, Douglas, Edgar, McLean, Piatt, Vermilion Counties

Yards

  • Monticello, Clinton, Bloomington, Towanda, LeRoy, Paris, Tuscola, Danville, Champaign, Leverett, Farmer City storage, Mansfield storage.

District 6 - Springfield

  • Adams, Brown, Cass, Christian, Hancock, Logan, Macoupin, Mason, Menard, Montgomery, Morgan, Pike, Sangamon, Schuyler, Scott Counties

Yards

  • Barry, Carlinville, Carthage, Jacksonville, Lincoln, Litchfield, Mason City, Mt. Sterling, Petersburg, Pittsfield, Quincy, Riggston Satellite, Riverton, Rushville, Springfield West, Taylorville, Virginia, Divernon storage, Havana storage
  • Bodine Electric of Springfield does traffic light maintenance in the area.

District 7 - Effingham

  • Clark, Clay, Coles, Crawford, Cumberland, Edwards, Effingham, Fayette, Jasper, Lawrence, Macon, Moultrie, Richland, Shelby, Wabash, Wayne Counties

Yards

  • Sullivan, Decatur, Vandalia, Effingham, Shelbyville, Mattoon, Charleston satellite, Lawrenceville, Newton, Robinson, Flora, Olney satellite, Marshall, Greenup, Fairfield, Browns Satellite.

District 8 - Fairview Heights

  • Bond, Calhoun, Clinton, Greene, Jersey, Madison, Marion, Monroe, Randolph, St. Clair, Washington Counties
  • Base heard calling EPV-53 on 47.02 110.9 PL

Yards

  • Belleville, Tunnel storage, Hecker, Steeleville, Greenville, Carlyle, Nashville, Hamel, Salem, Wood River, Troy, Jerseyville, Carrollton, Bowman Shed, Columbia, Highland, Scott Dome, Mitchell Satellite, Godfrey storage, Pierron storage, Fairview Heights, Brussels Ferry, Kampsville Ferry.

The Gateway Guide, the regional Intelligent Transportation System for the Bi-State St. Louis Metropolitan area, was developed through a partnership between: IDOT District 8, Missouri Department of Transportation (MoDOT) District 6, East-West Gateway Council of Governments (MPO), and METRO (formerly Bi-State Development Agency).

District 9 - Carbondale

  • Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson, Jefferson, Johnson, Massac, Perry, Pope, Pulaski, Saline, Union, White, Williamson Counties

Yards

  • Anna, Belgrade Satellite, Pinckneyville, Murphysboro, West City, Marion, Harrisburg, Elizabethtown, Shawneetown Satellite, Vienna, Cairo Satellite, Dongola, Mt. Vernon, Enfield, Dixon Springs storage.

Communications / Frequencies

  • Maintain operable and interoperable capabilities along with primary, redundant and supportive communications
  • Maintain communication centers -- 4 24-hour communication centers and 9 district communication centers
  • Maintain a high band and UHF radio system in the Chicago area.
  • Maintain an emergency command center located in Carbondale equipped with National Interoperable frequencies and satellite communications.
  • Maintain Mobile Emergency Operations Centers (MEOC) located in Ottawa, Dixon, Peoria, Paris, Springfield and Effingham.

Statewide Portable Frequencies - Unidentified uses and tones

  • 453.4625, 458.4625 (11/16K Digital) at 40kmra Saline County WNZU567
  • 453.4625, 458.4625 (11/16K Digital) at 40kmra Jackson County WNZU571
  • 453.4625, 458.4625 (11/16K Digital) at 16kmra Massac County WPFU937
  • 453.4625, 458.4625 (11/16K Digital) at 16kmra Livingston County WPFU938
  • 453.4625, 458.4625 (11/16K Digital) at 40kmra Franklin County WNUE273
  • 453.4625, 458.4625 (11/16K Digital) at 40kmra Williamson County WNUE262
  • 453.4625, 458.4625 (11/16K Digital) at 40kmra Sangamon County KD39304
  • Statewide Temporary Fixed Bases on: 47.02, 47.06, 47.1, 47.14, 47.18, 47.28, 47.3, 47.36, 47.38 (20K) 150.995, 151.04, 151.07, 151.13, 156.045, 156.06, 156.12, 156.135, 159.18, 159.195 WPGA913
  • 453.3625, 453.5125, 453.5375, 453.6875, 453.7125, 453.7625, 453.8875, 453.9125, 458.3625, 458.4625, 458.5125, 458.5375, 458.6875, 458.7125, 458.7625, 458.8875, 458.9125 Statewide Portables KJK803
  • Mobiles on 155.055, 155.925, 453.025, 453.3, 453.35, 453.6, 453.65, 453.8, 453.875, 453.9, 458.3, 458.35, 458.6, 458.65, 458.8, 458.875, 458.9 Statewide KR5616

Contractors

  • Egizi Electric of Springfield is contracted to install/maintain most Traffic Signals in the District 6 & District 8 areas (known to work in Springfield, Carlinville, Litchfield, Glen Carbon)


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