What: Vision Zero = the policy goal of eliminating fatal and serious (K+A) injuries via the Safe System approach — crashes are treated as preventable outcomes of design, speed, and policy, not “accidents.” The High Injury Network (HIN) is its screening tool: the small share of the street network carrying a disproportionate share of severe crashes, mapped and ranked to focus spending.
Why: Tampa, St. Petersburg, and Hillsborough County all run Vision Zero programs, so this vocabulary shows up verbatim in local scopes and RFPs. If your study corridor sits on the HIN, say so in the report — it’s priority framing for the agency, aligns the rec with SS4A grant language, and the TPO already collects multimodal counts at HIN locations.
When: existing-conditions chapters (“corridor is on the adopted HIN”), safety study prioritization, calming petitions on HIN streets, grant support tasks.
Local anchor: Plan Hillsborough Vision Zero — the Hillsborough TPO’s Action Plan (four tracks incl. “Paint Saves Lives”), Speed Management Plan, progress reports, and corridor studies for eight of the top-50 high-injury corridors #status/verify current plan edition and corridor list.
Tip
For the national methodology — how HINs are built, action-plan guidance, Safe System webinars, SS4A materials — use the free Vision Zero Network resource library. Cite the local adopted plan for corridor-specific claims, not the national one.
See also: How to Summarize 5-Year Crash Data · Countermeasure Selection and CMFs · Midblock Crossing Evaluation (RRFB PHB Signal)