High Injury Network

Arlington’s Vision Zero High-Injury Network (HIN) identifies streets within the county that have a relatively high number of serious injury and fatal crashes. The Vision Zero approach is focused on reducing our most severe crashes first and foremost, and the HIN allows us to focus analysis and resources on these corridors. In the Vision Zero Action Plan, we made a commitment to update the HIN every three (3) years. Our 2023 HIN identification methodology(PDF, 1MB) applied includes fatal, severe, and visible injury crashes. 

The County's current HIN uses data from 2018-2022. The network covers 52% of all fatal, severe, or injury crashes in Arlington and 6.8% of all roadways: 

View the 2023-2025 Vision Zero High-Injury Network PDF Map(PDF, 1MB)

View the 2023-2025 Vision Zero High-Injury Network Interactive Map

Multidisciplinary staff conduct safety audits on Arlington’s High-Injury Network (HIN) corridors. The purpose of the audits is to visit each HIN corridor to identify: (1) small scale or quick-build projects that we can implement quickly to improve safety, (2) existing/upcoming projects occurring on the corridor and how they will help address safety, and (3) other opportunities or needs to enhance safety for consideration for future capital projects or plans. 

View the High-Injury Network Corridor Safety Audits Page

What’s next for the 2023-2025 HIN corridors?

The table below shows the schedule for HIN safety audits that will take place over the next three years (2023-2025). The schedule order takes into consideration: crash severity, upcoming/ongoing site development, upcoming/ongoing capital projects, recently implemented projects, and coordination with nearby plans or studies. Corridors that have been audited within the past two years, will not be re-audited; however, we will conduct periodic crash reviews to understand if/how the corridor is responding to improvements from the safety audit and identify if additional safety measures are necessary.

Why are some corridors not showing up that have had recent fatal or severe crashes?

• Corridors that experienced a recent fatal or severe crash or crashes may have ranked below the 98th percentile threshold due to limited instances of severe or visible injuries. That does not mean that these corridors will not receive a thorough safety response. We track and investigate all critical (fatal or severe) crashes throughout the year—which lead to immediate engineering response where possible. We also track and investigate hot spots, which cover specific intersections that experience disproportionate crashes over a five-year period.
• For example, Little Falls Rd, which experienced two fatal crashes during the 2018-2022 period, did not rank in the top 98th percentile. This corridor, though, received a critical crash response. We conducted a thorough assessment along that corridor and added improvements that will continue to be tracked and investigated to ensure they are positively impacting safety on the corridor.