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 (2019) - Idaho

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/.

  • Number of Fatalities

  • Number of Fatalities 2013 2014 2015 2016 2017 2018 2019 2020 2021
    Annual 214 186 216 253 245 234 224
    5-Year Average 222.8 226.8 234.4
    Target (5-Year Average) 187.0 249.0 247.0
  • Basis for Number of Fatalities Target

    The target was established using trend analysis. It supports the SHSP goal of reducing fatalities on Idaho roadways. On page 11 of the Idaho SHSP it shows that our primary goal is to reduce the number of traffic deaths to 185 or fewer by the year 2020. The table showing the 5 year average total fatalities shows 188 for the year of 2018.
    The target was established using trend analysis. It supports the SHSP goal of reducing fatalities on Idaho roadways.
    The target was established using trend analysis. It supports the SHSP goal of reducing fatalities on Idaho roadways.

  • Data Sources:
    Fatalities: 2013-2018 Final FARS, 2019 FARS Annual Report File
    Targets: 2018-2020 Idaho HSIP Annual Reports

  • Fatality Rate (per 100 million VMT)

  • Fatality Rate
    (per 100 million VMT)
    2013 2014 2015 2016 2017 2018 2019 2020 2021
    Annual 1.34 1.15 1.30 1.47 1.42 1.32 1.24
    5-Year Average 1.336 1.332 1.350
    Target (5-Year Average) 1.120 1.410 1.380
  • Basis for Fatality Rate Target

    The target was established using trend analysis. It supports the SHSP goal of reducing the fatality rate in Idaho. On page 11 of the Idaho SHSP it shows that our secondary goal is to reduce the rate of traffic deaths to 1.1 per 100 million miles traveled by 2020. The table showing the 5 year fatality rate shows 1.14 for the year of 2018.
    The target was established using trend analysis. It supports the SHSP goal of reducing fatalities on Idaho roadways.
    The target was established using trend analysis. It supports the SHSP goal of reducing fatalities on Idaho roadways.

  • Data Sources:
    Fatalities: 2013-2018 Final FARS, 2019 FARS Annual Report File
    VMT: 2013-2019 FHWA Highway Statistics Series, VM-2 Table
    Targets: 2018-2020 Idaho HSIP Annual Reports

  • Number of Serious Injuries

  • Number of Serious Injuries 2013 2014 2015 2016 2017 2018 2019 2020 2021
    Annual 1,278 1,294 1,360 1,336 1,247 1,250 1,154
    5-Year Average 1,303.0 1,297.4 1,269.4
    Target (5-Year Average) 1,230.0 1,287.0 1,285.0
  • Basis for Number of Serious Injuries Target

    The target was established using trend analysis. It supports the SHSP goal of reducing serious injuries on Idaho roadways. On page 11 of the Idaho SHSP it shows that our secondary goal is to reduce the number of serious injuries due to traffic crashes to 1221 or fewer by 2020.
    The target was established using trend analysis. It supports the SHSP goal of reducing fatalities on Idaho roadways.
    Goals are set and performance will be measured using five-year averages and five-year rates. Regression analysis in EXCEL was used to set targets. In some instances the Analyst who develops the performance measures may adjust the values based on additional information. All goals are based off of goals set for the emphasis areas within our SHSP.

  • Data Sources:
    Serious Injuries: 2020 Idaho HSIP Annual Report
    Targets: 2018-2020 Idaho HSIP Annual Reports

  • Rate of Serious Injuries (per 100 million VMT)

  • Rate of Serious Injuries
    (per 100 million VMT)
    2013 2014 2015 2016 2017 2018 2019 2020 2021
    Annual 8.00 8.01 8.16 7.77 7.21 7.06 6.39
    5-Year Average 7.830 7.642 7.318
    Target (5-Year Average) 7.360 7.300 7.210
  • Basis for Serious Injury Rate Target

    The target was established using trend analysis. It supports the SHSP goal of reducing the rate of serious injuries in Idaho. On page 11 of the Idaho SHSP it shows that our secondary goal is to reduce the rate of serious injury crashes to 7.27 per 100 million annual vehicle miles traveled by 2020.
    Goals are set and performance will be measured using five-year averages and five-year rates. Regression analysis in EXCEL was used to set targets. In some instances the Analyst who develops the performance measures may adjust the values based on additional information. All goals are based off of goals set for the emphasis areas within our SHSP.
    Goals are set and performance will be measured using five-year averages and five-year rates. Regression analysis in EXCEL was used to set targets. In some instances the Analyst who develops the performance measures may adjust the values based on additional information. All goals are based off of goals set for the emphasis areas within our SHSP.

  • Data Sources:
    Serious Injuries: 2020 Idaho HSIP Annual Report
    VMT: 2013-2019 FHWA Highway Statistics Series, VM-2 Table
    Targets: 2018-2020 Idaho HSIP Annual Reports

  • Number of Non-Motorized Fatalities and Serious Injuries

  • Number of Non-Motorized Fatalities
    and Serious Injuries
    2013 2014 2015 2016 2017 2018 2019 2020 2021
    Annual 125 118 98 141 126 142 112
    5-Year Average 121.6 125.0 123.8
    Target (5-Year Average) 120.0 120.0 120.0
  • Basis for Number of Non-Motorized Fatalities and Serious Injuries Target

    Although trend analysis was use on setting this target, the analyst who provided these values also relied on his years of working with data. The numbers for Idaho are so low that there is a lot of variability in the data, therefore the value isn't strictly based on the trend analysis. The value supports the SHSP goal of reducing non motorized fatalities and serious injuries in Idaho. Idaho's SHSP has a section on vulnerable roadway users with Bicycle and Pedestrian being one sub group in that category. The goals are to reduce the 5 year average of bicycle involved fatal crashes to 2 bicyclist or fewer and to reduce the five year average of pedestrian involved fatal crashes to 10 or fewer pedestrians by 2020. The SHSP does not include a goal value of serious injuries but the strategies are related to reducing the number of crashes of bicyclists and pedestrians.
    Although trend analysis was use on setting this target, the analyst who provided these values also relied on his years of working with data. The numbers for Idaho are so low that there is a lot of variability in the data, therefore the value isn't strictly based on the trend analysis. The value supports the SHSP goal of reducing non motorized fatalities and serious injuries in Idaho. Idaho's SHSP has a section on vulnerable roadway users with Bicycle and Pedestrian being one sub group in that category. The goals are to reduce the 5 year average of bicycle involved fatal crashes to 2 bicyclist or fewer and to reduce the five year average of pedestrian involved fatal crashes to 10 or fewer pedestrians by 2020. The SHSP does not include a goal value of serious injuries but the strategies are related to reducing the number of crashes of bicyclists and pedestrians.
    Although trend analysis was use on setting this target, the analyst who provided these values also relied on his years of working with data. The numbers for Idaho are so low that there is a lot of variability in the data, therefore the value isn't strictly based on the trend analysis. The value supports the SHSP goal of reducing non motorized fatalities and serious injuries in Idaho. Idaho's SHSP has a section on vulnerable roadway users with Bicycle and Pedestrian being one sub group in that category. The goals are to reduce the 5 year average of bicycle involved fatal crashes to 2 bicyclist or fewer and to reduce the five year average of pedestrian involved fatal crashes to 10 or fewer pedestrians by 2020. The SHSP does not include a goal value of serious injuries but the strategies are related to reducing the number of crashes of bicyclists and pedestrians.


  • Data Sources:
    Fatalities: 2013-2018 Final FARS, 2019 FARS Annual Report File
    Serious Injuries: 2020 Idaho HSIP Annual Report
    Targets: 2018-2020 Idaho HSIP Annual Reports


Additional Comments

2020 Comments:

The values that are submitted by NHTSA from the HSP are incorrect. Idaho is working with their regional office in order to make the corrections. The values that were inputted by Idaho for the HSIP are the correct values.

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.

Idaho 2019 Safety Performance Target Assessment
Performance Measure 2015-2019 Target 2015-2019 Actual 2013-2017 Baseline Met Target? Better Than Baseline? Met or Made Significant Progress?
Number of Fatalities 187.0 234.4 222.8 No No No
Rate of Fatalities 1.120 1.350 1.336 No No
Number of Serious Injuries 1,230.0 1,269.4 1,303.0 No Yes
Rate of Serious Injuries 7.360 7.318 7.830 Yes N/A
Number of Non-Motorized Fatalities and Serious Injuries 120.0 123.8 121.6 No No

Updated: 05/26/2021
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000