State Highway Safety Report (2018) - New Hampshire
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.
Introduction: The data that will be used to determine significant progress (whether or not targets are achieved) is prescribed by regulations. The methodology to determine targets are not. Data is collected from the National Highway Traffic Safety Administration (NHTSA), the Highway Performance Monitoring System (HPMS) and the New Hampshire Department of Safety (DOS). Trend analysis was used to analyze the data. Trend analysis uses past data and patterns to project future outputs. Trend analysis functions correctly when no significant change has occurred in the underlying processes that affect the overall metric. Safety gains are driven by policy and budget and because there has been no recent significant change to policy or budget trend analysis is appropriate. Sources Data is collected from several sources. Yearly values are collected from each source and when enough data is available, 5 year averages are created. 5-year averages are valuable for safety analysis because the 5 year period generally reduces variability that significantly affects values from year to year and because regulators will use 5-year averages to determine significant progress. To calculate 5 individual 5-year averages data would need to be available from 2007. Data sources are prescribed by the regulations: Fatalities: NHTSA, Rate of Fatalities (108 VMT): NHTSA & HPMS, Serious Injuries: DOS, Rate of Serious Injuries (108 VMT): DOS & HPMS, Non Motorized Fatalities & Serious Injuries: NHTSA & DOS
In concert with the collaborative and data-driven Strategic Highway Safety Plan, the annual safety performance targets have as their basis the SHSP's fundamental goal of reducing fatal crashes by half by the year 2030, with the ultimate goal of zero fatalities. A similar motivating goal drives the targets for serious injuries, both for motorized and non-motorized modes. The process of target setting, likewise, emulates the SHSP in that it is collaborative, involving many of the same safety stakeholders who are instrumental in the SHSP, and uses objective data-driven methods wherever possible to derive and inform the safety targets.
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.
|Performance Measure||2014-2018 Target||2014-2018 Outcome||2012-2016 Baseline||Met Target?||Better Than Baseline?||Met or Made Significant Progress?|
|Number of Fatalities||113.2||118.8||117.6||No||No||YES|
|Rate of Fatalities||0.866||0.886||0.900||No||Yes|
|Number of Serious Injuries||499.8||449.6||499.8||Yes||N/A|
|Rate of Serious Injuries||3.847||3.358||3.828||Yes||N/A|
|Number of Non-Motorized Fatalities and Serious Injuries||51.4||55.0||59.4||No||Yes|