Illinois Department of Transportation (IDOT) (IL)
From The RadioReference Wiki
- IDOT website
- Central Office - Springfield, IL
- For information on IDOT District frequencies and talkgroups, see the Radioreference IDOT Database page.
- "Lane 1" is the far left lane.
Contents
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.
Statewide - Contractors
- Egizi Electric of Springfield is contracted to install/maintain most Traffic Signals in the District 6 & District 8 areas (know to work in Springfield, Carlinville, Litchfield, Glen Carbon)
Statewide Portable Frequencies - Unidentified uses and tones
- WNZU567 453.4625, 458.4625 (11/16K Digital) at 40kmra Saline County
- WNZU571 453.4625, 458.4625 (11/16K Digital) at 40kmra Jackson County
- WPFU937 453.4625, 458.4625 (11/16K Digital) at 16kmra Massac County
- WPFU938 453.4625, 458.4625 (11/16K Digital) at 16kmra Livingston County
- WNUE273 453.4625, 458.4625 (11/16K Digital) at 40kmra Franklin County
- WNUE262 453.4625, 458.4625 (11/16K Digital) at 40kmra Williamson County
- KD39304 453.4625, 458.4625 (11/16K Digital) at 40kmra Sangamon County
- KJK803 Statewide Temporary Fixed Bases on:
- 47.0200, 47.0600, 47.1000, 47.1400, 47.1800, 47.2800, 47.3000, 47.3600, 47.3800 (20K)
- 150.9950, 151.0400, 151.0700, 151.1300, 156.0450, 156.0600, 156.1200, 156.1350, 159.1800, 159.1950
47.0200 KJK803 B IDOT/CMS 1 Statewide Moveable Bases 453.3625 WPGA913 M IDOT/CMS 2 Statewide Portables WPGA913 M IDOT/CMS 3 Statewide Portables FM Public Works 453.5125 WPGA913 M IDOT/CMS 4 Statewide Portables 453.5375 WPGA913 M IDOT/CMS 5 Statewide Portables 453.6875 WPGA913 M IDOT/CMS 6 Statewide Portables 453.7125 WPGA913 M IDOT/CMS 7 Statewide Portables 453.7625 WPGA913 M IDOT/CMS 8 Statewide Portables 453.8875 WPGA913 M IDOT/CMS 9 Statewide Portables 453.9125 WPGA913 M IDOT/CMS 10 Statewide Portables 458.3625 WPGA913 M IDOT/CMS 11 Statewide Portables 458.4625 WPGA913 M IDOT/CMS 12 Statewide Portables 458.5125 WPGA913 M IDOT/CMS 13 Statewide Portables 458.5375 WPGA913 M IDOT/CMS 14 Statewide Portables 458.6875 WPGA913 M IDOT/CMS 15 Statewide Portables 458.7125 WPGA913 M IDOT/CMS 16 Statewide Portables 458.7625 WPGA913 M IDOT/CMS 17 Statewide Portables 458.8875 WPGA913 M IDOT/CMS 18 Statewide Portables 458.9125 WPGA913 M IDOT/CMS 19 Statewide Portables 155.0550 KR5616 M IDOT/CMS 20 IDOT/CMS: Statewide 155.9250 KR5616 M IDOT/CMS 21 IDOT/CMS: Statewide 453.0250 KR5616 M IDOT/CMS 22 IDOT/CMS: Statewide 453.3000 KR5616 M IDOT/CMS 23 IDOT/CMS: Statewide (N of I-70) 453.3500 KR5616 M IDOT/CMS 24 IDOT/CMS: Statewide 453.6000 KR5616 M IDOT/CMS 25 IDOT/CMS: Statewide 453.6500 KR5616 M IDOT/CMS 26 IDOT/CMS: Statewide 453.8000 KR5616 M IDOT/CMS 27 IDOT/CMS: Statewide 453.8750 KR5616 M IDOT/CMS 28 IDOT/CMS: Statewide 453.9000 KR5616 M IDOT/CMS 29 IDOT/CMS: Statewide 458.3000 KR5616 M IDOT/CMS 30 IDOT/CMS: Statewide (N of I-70) 458.3500 KR5616 M IDOT/CMS 31 IDOT/CMS: Statewide 458.6000 KR5616 M IDOT/CMS 32 IDOT/CMS: Statewide 458.6500 KR5616 M IDOT/CMS 33 IDOT/CMS: Statewide 458.8000 KR5616 M IDOT/CMS 34 IDOT/CMS: Statewide 458.8750 KR5616 M IDOT/CMS 35 IDOT/CMS: Statewide 458.9000 KR5616 M IDOT/CMS 36 IDOT/CMS: Statewide 458.9000 KR5616 M IDOT/CMS 37 IDOT/CMS: Statewide
Starcom21
Identified Talkgroups
Most districts in the state are using Starcom21 for their radio communications. Below is a map which shows the talkgroups used at the local IDOT yards throughout the state.
A closeup map of the Chicago Area yards:
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)
District 1 - Schaumburg (Chicago Metro Area)
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?)
Related Links
- Illinois Rest Areas map
- IDOT District Map
- Weigh Station maps
- Rich Carlson's Illinois Highways Page - Description & History of Roads in IL by N9JIG