Highway Safety Improvement Program
The Fixing America's Surface Transportation Act (FAST) was signed into law on December 4, 2015. Under FAST, the Highway Safety Improvement Program (HSIP), Section 148 of Title 23, United States Code (23 U.S.C §148), is a core federal-aid program to States for the purpose of achieving significant reduction in fatalities and serious injuries on all public roadways, including non-State owned roads and roads on tribal land. The HSIP requires a data-driven, strategic approach to improving highway safety on all public roads with a focus on performance to support zero deaths and serious injuries on Colorado roads.
FY 2026 Local Agency Request Letter
Local Agency HSIP Application Form
Status: Open! Notice of funding opportunity for FY 2026 HSIP Local Agency Projects issued December 16, 2022. Applications due February 28, 2023.
CDOT HSIP Application Form (for CDOT use only)
Colorado HSIP Procedural Manual
How Benefit-to-Cost Ratios are Determined
FHWA Proven Safety Countermeasures
Example Local Agency HSIP Applications