U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000


Skip to content U.S. Department of Transportation/Federal Highway AdministrationU.S. Department of Transportation/Federal Highway Administration

Transportation Performance Management

 

State Highway Safety Report (2020) - Illinois

Select HSIP Report Year:

The following provides a summary of the Highway Safety Improvement Program’s (HSIP) safety performance measures and State safety performance targets. As per the Safety PM Final Rule, States are required to set annual safety performance targets in the HSIP annual report for the number of fatalities, rate of fatalities per 100 million vehicle miles traveled (VMT), number of serious injuries, rate of serious injures per 100 million VMT, and number of non-motorized fatalities and serious injuries. The safety performance targets are based on 5-year rolling averages. States have the flexibility to use the methodology they deem most appropriate. FHWA encourages States to review data sets and trends and consider factors that may affect targets. The safety performance targets should be data-driven, realistic, and attainable and should align with the performance management framework and legislative intent.

A State Department of Transportation (DOT) has met or made significant progress towards meeting its safety performance targets when at least four of the five safety performance targets established under 23 CFR 490.209(a) have been met or the actual outcome is better than the baseline performance. The baseline performance is the 5-year average ending with the year prior to the establishment of the target.

The Basis for Target and Additional Comments are provided by the State in their HSIP Annual Report and have not been edited by FHWA. Any questions about individual State reports should be directed to the respective State DOT. For additional information about each State's HSIP, the complete reports are available at https://safety.fhwa.dot.gov/hsip/reports/.

More information and resources on Safety Performance Management are available at https://safety.fhwa.dot.gov/hsip/spm/.

All State data used to populate the State Highway Safety Reports for 2020 are available for download at https://www.fhwa.dot.gov/tpm/reporting/state/tpm_dashboard_data.zip.

  • Number of Fatalities

  • Number of Fatalities 2014 2015 2016 2017 2018 2019 2020 2021 2022
    Annual 924 998 1,078 1,090 1,035 1,009 1,194
    5-Year Average 1,025.0 1,042.0 1,081.2
    Target (5-Year Average) 985.0 1,000.0 1,000.0
  • Basis for Number of Fatalities Target

    Total traffic fatalities in Illinois are a main concern and reduction of total fatalities remains the primary goal of the Department as stated in the SHSP. Data from 2010-2018 were utilized to create a five-year rolling average for each year. For example, the rolling average for 2013 was computed by averaging 2009, 2010, 2011, 2012, and 2013. A rolling average is commonly used to smooth out short-term fluctuations and highlight longer-term trends or cycles. To project performance targets for Illinois, a two-percent reduction was utilized. The goal for 2019 was computed by reducing 2018 by two-percent and 2020 was computed by reducing 2019 by two-percent. A two-percent reduction was used due to the fact the five-year rolling averages from 2014 to 2018 have an upward linear trend as seen through the linear regression line. The goal for Illinois is to reach zero fatalities per year and using a two-percent reduction will enable the state to reach its goal. The mission of the SHSP is to develop, implement and manage a data-driven, integrated, multi-stakeholder process to reduce traffic-related deaths and life-altering injuries on all public roads in Illinois. Each of the emphasis areas are prioritized and based on the greatest opportunity to reduce fatalities and serious injuries.
    The target was established based on a 5-year rolling average using crash data from 2015 – 2019 (as of July 8, 2020) and a 2% reduction. IDOT’s overall goal as outlined in its SHSP is 0 fatalities and hopes that a 2% reduction each year will result in ultimately reaching that goal. Implementing HSIP projects is just one of the ways in which IDOT can meet its goal.
    The target was established based on a 5-year rolling average using crash data from 2016 – 2020 and a 2% reduction. IDOT's overall goal as outlined in its SHSP is 0 fatalities and hopes that a 2% reduction each year will result in ultimately reaching that goal. Implementing HSIP projects is just one of the ways in which IDOT can meet its goal.

  • Data Sources:
    Fatalities: 2014-2019 Final FARS, 2020 FARS Annual Report File
    Targets: 2019-2021 Illinois HSIP Annual Reports

  • Fatality Rate (per 100 million VMT)

  • Fatality Rate
    (per 100 million VMT)
    2014 2015 2016 2017 2018 2019 2020 2021 2022
    Annual 0.88 0.95 1.00 1.01 0.96 0.94 1.27
    5-Year Average 0.960 0.972 1.036
    Target (5-Year Average) 0.910 0.930 0.930
  • Basis for Fatality Rate Target

    Similar to previous target selection methods, five-year rolling averages were used from 2014-2018 for the Total Traffic Fatality Rate. Since the 2018 Vehicle Miles of Travel (VMT) data from FHWA were not available, the 2018 state VMT data published by IDOT were used to calculate the fatality rate. Like the Total Traffic Fatalities, the data show an upward trend. To move toward the goal of zero fatalities, a two-percent reduction is applied annually resulting in the projected rate of 0.91 per 100 million VMT in 2020. Reducing the fatalities and the fatality rate in Illinois are a main concern and a primary goal of the Department as stated in the SHSP. The mission of the SHSP is to develop, implement and manage a data-driven, integrated, multi-stakeholder process to reduce traffic-related deaths and life-altering injuries on all public roads in Illinois. Each of the emphasis areas are prioritized and based on the greatest opportunity to reduce fatalities and serious injuries.
    The target was established based on a 5-year rolling average using crash data from 2015 – 2019 (as of July 8, 2020) and a 2% reduction. As mentioned before, IDOT’s SHSP’s overall goal is 0 fatalities and hopes that a 2% reduction each year will result in ultimately reaching that goal. Implementing HSIP projects is just one of the ways in which IDOT can meet its goal.
    The target was established based on a 5-year rolling average using crash data from 2016 – 2020 and a 2% reduction. IDOT's overall goal as outlined in its SHSP is 0 fatalities and hopes that a 2% reduction each year will result in ultimately reaching that goal. Implementing HSIP projects is just one of the ways in which IDOT can meet its goal.

  • Data Sources:
    Fatalities: 2014-2019 Final FARS, 2020 FARS Annual Report File
    VMT: 2014-2020 FHWA Highway Statistics Series, VM-2 Table
    Targets: 2019-2021 Illinois HSIP Annual Reports

  • Number of Serious Injuries

  • Number of Serious Injuries 2014 2015 2016 2017 2018 2019 2020 2021 2022
    Annual 12,300 11,748 12,844 11,622 11,344 9,685 8,560
    5-Year Average 11,971.6 11,448.6 10,811.0
    Target (5-Year Average) 11,668.7 11,566.4 11,556.4
  • Basis for Number of Serious Injuries Target

    For Total Serious Injuries in Traffic Crashes, five-year rolling averages were created for each year from 2013-2017 since 2018 was not yet available. 2018 was then estimated through the use of a trendline and the total average of 2014 through 2018. Although this resulted in a downward trend, the reduction of fatalities by 2020 was not sufficient to be greater than two-percent; therefore, a two-percent reduction was used which sets a target of 11,668.7 total serious injuries in 2020. Reducing serious injuries is a goal set in the SHSP along with the reduction of fatalities. The mission of the SHSP is to develop, implement and manage a data-driven, integrated, multi-stakeholder process to reduce traffic-related deaths and life-altering injuries on all public roads in Illinois. Each of the emphasis areas are prioritized and based on the greatest opportunity to reduce fatalities and serious injuries.
    The target was established based on a 5-year rolling average using crash data from 2015 – 2019 (as of May 28, 2020) and a 2% reduction. It should be noted that as serious injuries were not yet finalized at the time of analysis for 2019, they have been estimated. In addition to reaching 0 fatalities, the SHSP also calls for 0 serious injuries, and by reducing serious injuries 2% each year, IDOT hopes to reach that goal. Implementing HSIP projects is just one of the ways in which IDOT can meet its goal.
    The target was established based on a 5-year rolling average using crash data from 2016 – 2020 and a 2% reduction. IDOT's overall goal as outlined in its SHSP is 0 fatalities and hopes that a 2% reduction each year will result in ultimately reaching that goal. Implementing HSIP projects is just one of the ways in which IDOT can meet its goal.

  • Data Sources:
    Serious Injuries: 2021 Illinois HSIP Annual Report
    Targets: 2019-2021 Illinois HSIP Annual Reports

  • Rate of Serious Injuries (per 100 million VMT)

  • Rate of Serious Injuries
    (per 100 million VMT)
    2014 2015 2016 2017 2018 2019 2020 2021 2022
    Annual 11.72 11.16 11.97 10.76 10.51 9.01 9.09
    5-Year Average 11.224 10.682 10.268
    Target (5-Year Average) 10.800 10.790 10.328
  • Basis for Serious Injury Rate Target

    For Total Serious Injury Rate per 100M VMT, five-year rolling averages for Total Serious Injuries (as previously shown) were divided by five-year rolling averages for VMT for 2014 through 2018. Since Federal VMT was available for all years except 2018, state VMT was used for 2018. Linear regression for the projected values of 2019 and 2020 only show a slight downward trend in the reduction of Total Serious Injury Rate by 2020 of 11.07 per 100 M VMT. Instead, a two-percent reduction was used, bringing the target to 10.80 per 100 M VMT in 2020. Reducing the serious injuries and the serious injury rate in Illinois are a main concern and a primary goal of the Department as stated in the SHSP. The mission of the SHSP is to develop, implement and manage a data-driven, integrated, multi-stakeholder process to reduce traffic-related deaths and life-altering injuries on all public roads in Illinois. Each of the emphasis areas are prioritized and based on the greatest opportunity to reduce fatalities and serious injuries.
    10.79 is the 2% reduction rate. It was established based on a 5-year rolling average using crash data from 2015 – 2019 (as of May 28, 2020) and a 2% reduction. It should be noted that as serious injuries were not yet finalized at the time of analysis for 2019, they have been estimated. In addition to reaching 0 fatalities, IDOT’s SHSP also aims to reach 0 serious injuries, and by reducing serious injuries 2% each year, IDOT hopes to reach that goal. Implementing HSIP projects is just one of the ways in which IDOT can meet its goal.
    The target was established based on a 5-year rolling average using crash data from 2016 – 2020 and a 2% reduction. IDOT's overall goal as outlined in its SHSP is 0 fatalities and hopes that a 2% reduction each year will result in ultimately reaching that goal. Implementing HSIP projects is just one of the ways in which IDOT can meet its goal.

  • Data Sources:
    Serious Injuries: 2021 Illinois HSIP Annual Report
    VMT: 2014-2020 FHWA Highway Statistics Series, VM-2 Table
    Targets: 2019-2021 Illinois HSIP Annual Reports

  • Number of Non-Motorized Fatalities and Serious Injuries

  • Number of Non-Motorized Fatalities
    and Serious Injuries
    2014 2015 2016 2017 2018 2019 2020 2021 2022
    Annual 1,438 1,470 1,747 1,384 1,591 1,552 1,291
    5-Year Average 1,526.0 1,548.8 1,513.0
    Target (5-Year Average) 1,456.2 1,517.6 1,512.2
  • Basis for Number of Non-Motorized Fatalities and Serious Injuries Target

    For the Number of Nonmotorized Fatalities and Serious Injuries, five-year rolling averages were created for each year from 2013-2017 since 2018 was not yet available. Next, a trendline was created based on the data from 2013-2017. Using the trendline, the value for 2018 was calculated. 2018 was further estimated by taking this trend value for 2018 and averaging it with the total average of 2014 through 2018. This resulted in an upward trend, moving Illinois away from the goal of reaching zero fatalities so a two-percent reduction was used. This sets the target to 1,456.2 Nonmotorized fatalities and serious injuries in 2020. The mission of the SHSP is to develop, implement and manage a data-driven, integrated, multi-stakeholder process to reduce traffic-related deaths and life-altering injuries on all public roads in Illinois. Each of the emphasis areas are prioritized and based on the greatest opportunity to reduce fatalities and serious injuries.
    1517.6 is the 2% reduction rate. It was established based on a 5-year rolling average using crash data (pedestrian, bicyclist, and other cyclist) from 2015 – 2019 (as of July 8, 2020) and a 2% reduction. It should also be noted that as 2019 crash data was not yet finalized at the time of analysis, serious injury data has been estimated. While the majority of crashes involve motorists, IDOT still has concern for nonmotorized fatalities and serious injuries, and therefore has a 0 goal of fatalities and serious injuries for them as well in its SHSP. Implementing HSIP projects is just one of the ways in which IDOT can meet its goal.
    The target was established based on a 5-year rolling average using crash data from 2016 – 2020 and a 2% reduction. IDOT's overall goal as outlined in its SHSP is 0 fatalities and hopes that a 2% reduction each year will result in ultimately reaching that goal. Implementing HSIP projects is just one of the ways in which IDOT can meet its goal.

  • Data Sources:
    Fatalities: 2014-2019 Final FARS, 2020 FARS Annual Report File
    Serious Injuries: 2021 Illinois HSIP Annual Report
    Targets: 2019-2021 Illinois HSIP Annual Reports


Additional Comments

2021 Comments:

Last year NHTSA wanted progress (met or unmet) toward a whole year’s worth of data. This year they changed it and wanted progress toward meeting the State’s 2020 Safety Performance Targets. This was a radical change. We ended up sending in Year to Date data for 1/1/2020-6/30/2020.

Safety Performance Target Assessment

PLEASE NOTE: Each State’s safety performance target assessment is based on its own State-specific target methodology and program philosophy. Therefore, conclusions should not be drawn based only on the information in the Safety Performance Target Assessment Summary table. For example, the State may have set aggressive targets, and not met those targets, while another State may have set more easily attainable targets, and met those targets. FHWA understands that each State’s safety program is unique and therefore does not prescribe a methodology for States to set targets. States have the flexibility to use the methodology they deem most appropriate when setting their safety performance targets.

Illinois 2020 Safety Performance Target Assessment
Performance Measure 2016-2020 Target 2016-2020 Actual 2014-2018 Baseline Met Target? Better Than Baseline? Met or Made Significant Progress?
Number of Fatalities 985.0 1,081.2 1,025.0 NO NO NO
Rate of Fatalities 0.910 1.036 0.960 NO NO
Number of Serious Injuries 11,668.7 10,811.0 11,971.6 YES N/A
Rate of Serious Injuries 10.800 10.268 11.224 YES N/A
Number of non-motorized fatalities and non-motorized serious injuries 1,456.2 1,513.0 1,526.0 NO YES

Updated: 04/19/2022
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000