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Alaska: Highway Safety Improvement Program 2021 Annual Report
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2021-01-01
[PDF-1.13 MB]
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Abstract:Under the Alaska Highway Safety Improvement Program (HSIP), the Alaska Department of Transportation & Public Facilities (DOT&PF) identifies high risk intersections and roads, scopes and prioritizes corrective projects, funds the most cost-effective projects, and evaluates actual project and program effectiveness. HSIP dollars are distributed to the most effective projects from a single statewide fund. The purpose of the Alaska HSIP is to “maximize lives saved and major injuries eliminated per dollar spent.” We currently measure our post-construction program benefit-cost ratio at approximately 6.76:1, a successful ratio achieved through a program that blends spot and systemic projects throughout the State in urban as well as rural locations. Regional Traffic and Safety personnel identify, scope, estimate, and rank candidate projects according to benefit-cost ratio (ranked projects) and potential for crash reduction (non-ranked projects). HQ Traffic & Safety reviews proposed new projects, works with the regions to clarify project description and scope, and submits recommended projects to DOT&PF's Chief Engineer for approval. Following approval of new HSIP projects, HQ Traffic and Safety selects the most effective projects and proposes a statewide HSIP funding plan for the coming federal fiscal year for approval by the Chief Engineer and the Director of Program Development. The HSIP funding plan typically includes a blend of on-going projects and new projects. Regions design and construct funded projects and generate before-after studies when three years of post-improvement crash data becomes available. HQ Traffic & Safety manages funding for the statewide HSIP, annually updates the HSIP Handbook, maintains program effectiveness data, and produces the annual HSIP report. Important Note on Performance Measures calculated by Online Reporting Tool: Alaska DOT&PF has been unable to provide timely data about serious injuries on a regular basis, and as a result, has been in an HSIP Implementation Plan since 2020. When we submitted in June of this year, the plan included completion of data validation for 2018, followed by 2019 data entry and validation, then the same for 2020. DOT&PF has changed the order of this work to take advantage of the fact that crashes with the potential for injuries or fatalities are reported on a different form than self-reported crashes, which are limited to crashes with minor property damage. As a result, this Annual Report includes data for serious injuries through 2019. Overall, in the past 18 months, DOT&PF has completed data entry on two years of crash reports (2017 - 2018) and is within 1% of completing data entry on crash reports resulting in injury or death for 2019. We estimate that data entry for the 2019 and 2020 crashes with the potential for injury and fatality will be completed in fall 2021. With FHWA permission, DOT&PF is prepared to provide updated serious injury data for 2019 and 2020 on or around January 1, 2022. Alaska has completed all quality control (QC) activities for 2017 data; however, the serious injury data for 2018 and 2019 must undergo final QC prior to being certified. Due to the nature of the remaining quality control activities, which includes removal of duplicate reports, any changes in the data would be likely to reduce the number of serious injuries reported. We anticipate that data entry on all crashes will be complete in the summer of 2022. DOT&PF intends to become current (data within 6 months) at the end of 2022.
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