CMAP Traffic Data

Traffic Data

Traffic Projection Request

For transportation implementing agencies and for requestors working on traffic studies for land parcel developments, CMAP develops small-area traffic projections based on our most recent regional travel demand analysis.

Traffic projections are provided for year 2050. CMAP travel models use adopted regional 2050 socioeconomic projections and assume implementation of the ON TO 2050 Comprehensive Regional Plan for Northeastern Illinois. Traffic projections consider projects as they appear in the current Transportation Improvement Program (TIP) and Regional Transportation Plan.

Please send the request, including the necessary information listed below, to Jose Rodriguez (jrodriguez@cmap.illinois.gov) and a copy to the project sponsor to ensure that the sponsor is aware of the request.

The following information should be included with your written request:

  • Location of the project (including a map or diagram).
  • Description of existing conditions and proposed improvements.
  • Current volume data - Average Daily Traffic (ADT), Average Annual Daily Traffic (AADT), or single day volume count summary at each location for which a projection is requested.  CMAP will return 2050 forecast volume in the same data type as was submitted; after receiving the response from CMAP, requestor may convert 2050 forecast data to differing volume measure as required or desired.
  • If an estimate of forecast truck volume is needed, please provide a current observed count for each class of truck vehicle available.
  • Description of recent or proposed development that may affect the demand on the facility.

Additional Instructions specific to Transportation Improvement – Specific Requests

Include a notation (cc:) showing that the implementing agency sponsoring the study has received a copy of the request and is aware that it has been made. (e.g., IDOT, Lake County, municipality, etc.). The sponsor will receive CMAP's response, and you will receive a copy.

Additional Instructions for Parcel-based development consultants preparing traffic impact studies (ROW Access Permits, Growth Rate, HUD Noise Analysis)

Follow the same instructions as listed above for the transportation improvement requests. In addition, a basic designation for the type of parcel development should be stated (Commercial, Residential, Industrial/Logistic, Educational/Institutional or Mixed Use specified with the use types) plus any additional information about the development (# of buildings on site, square footage/GFA, # dwelling units, access/egress locations) the requestor and client have agreed to share with CMAP.

The provision of traffic projection data by CMAP in support of your request does not constitute a CMAP endorsement of the proposed parcel development or any subsequent parcel developments.

Strategic Regional Arterial Information

Each traffic projection includes a check on whether the project is on an SRA route. If the project is on an SRA Route, we inform the requestor and suggest that they review the recommendations contained therein. CMAP has a relatively complete library of SRA reports, and we have copied the executive summaries from the reports and posted them to our website. To view them, visit the SRA Resources page.

Five-Year Functional Classification Maps

IDOT has completed generating and posting 5 Year Township Functional Classification maps for the whole state. They are published in pdf format and can be printed or downloaded. IDOT has also created an interactive lookup map containing functional class and key route information (formerly federal aid route numbers) which is updated with current information each evening.. If you are working on a functional class change application, be sure to use the official IDOT 5 Year Functional Class maps.

Transportation System Performance

CMAP has collected, analyzed and provided summaries of multiple transportation datasets to understand the region's transportation system performance as part of our ongoing Congestion Management Process.  You can also explore transportation system performance data with CMAP's new visualization page. 

Sources of Traffic Count Information

There are a number of sources of traffic count information available to the public.

To Top

Traffic Data

Traffic Projection Request

For transportation implementing agencies and for requestors working on traffic studies for land parcel developments, CMAP develops small-area traffic projections based on our most recent regional travel demand analysis.

Traffic projections are provided for year 2050. CMAP travel models use adopted regional 2050 socioeconomic projections and assume implementation of the ON TO 2050 Comprehensive Regional Plan for Northeastern Illinois. Traffic projections consider projects as they appear in the current Transportation Improvement Program (TIP) and Regional Transportation Plan.

Please send the request, including the necessary information listed below, to Jose Rodriguez (jrodriguez@cmap.illinois.gov) and a copy to the project sponsor to ensure that the sponsor is aware of the request.

The following information should be included with your written request:

  • Location of the project (including a map or diagram).
  • Description of existing conditions and proposed improvements.
  • Current volume data - Average Daily Traffic (ADT), Average Annual Daily Traffic (AADT), or single day volume count summary at each location for which a projection is requested.  CMAP will return 2050 forecast volume in the same data type as was submitted; after receiving the response from CMAP, requestor may convert 2050 forecast data to differing volume measure as required or desired.
  • If an estimate of forecast truck volume is needed, please provide a current observed count for each class of truck vehicle available.
  • Description of recent or proposed development that may affect the demand on the facility.

Additional Instructions specific to Transportation Improvement – Specific Requests

Include a notation (cc:) showing that the implementing agency sponsoring the study has received a copy of the request and is aware that it has been made. (e.g., IDOT, Lake County, municipality, etc.). The sponsor will receive CMAP's response, and you will receive a copy.

Additional Instructions for Parcel-based development consultants preparing traffic impact studies (ROW Access Permits, Growth Rate, HUD Noise Analysis)

Follow the same instructions as listed above for the transportation improvement requests. In addition, a basic designation for the type of parcel development should be stated (Commercial, Residential, Industrial/Logistic, Educational/Institutional or Mixed Use specified with the use types) plus any additional information about the development (# of buildings on site, square footage/GFA, # dwelling units, access/egress locations) the requestor and client have agreed to share with CMAP.

The provision of traffic projection data by CMAP in support of your request does not constitute a CMAP endorsement of the proposed parcel development or any subsequent parcel developments.

Strategic Regional Arterial Information

Each traffic projection includes a check on whether the project is on an SRA route. If the project is on an SRA Route, we inform the requestor and suggest that they review the recommendations contained therein. CMAP has a relatively complete library of SRA reports, and we have copied the executive summaries from the reports and posted them to our website. To view them, visit the SRA Resources page.

Five-Year Functional Classification Maps

IDOT has completed generating and posting 5 Year Township Functional Classification maps for the whole state. They are published in pdf format and can be printed or downloaded. IDOT has also created an interactive lookup map containing functional class and key route information (formerly federal aid route numbers) which is updated with current information each evening.. If you are working on a functional class change application, be sure to use the official IDOT 5 Year Functional Class maps.

Transportation System Performance

CMAP has collected, analyzed and provided summaries of multiple transportation datasets to understand the region's transportation system performance as part of our ongoing Congestion Management Process.  You can also explore transportation system performance data with CMAP's new visualization page. 

Sources of Traffic Count Information

There are a number of sources of traffic count information available to the public.

To Top