Office of Traffic and Safety

Traffic Safety Improvement Program (TSIP)

(Also known as "Traffic Safety Fund," "TSF," or "Half-Percent" Program)

Important Changes to Program

Early submittal of applications is encouraged as applications and the benefit cost worksheets will be reviewed by the Office of Traffic and Safety and Intrans at Iowa State University to ensure completeness and consistency between applications.

Total application should be no more than 20-25 pages in length. Do not include studies, endorsement letters, or testimonials. Hyperlinks to these documents can be included if further information is necessary.

DO NOT submit full crash reports. Submit crash summary from SAVER.

The Traffic Safety Improvement Program (TSIP) is defined by section 761, Chapter 164, of the Iowa Administrative Code. TSIP provides safety funds to cities, counties and the Iowa DOT in three separate categories.

Intent of program

To distribute traffic safety funds (TSF) to cities, counties and the Iowa DOT for roadway safety improvements, research, studies or public information initiatives.

Who is eligible to request funding?

Cities, counties or the Iowa DOT may request funding for use on any public roads.

FY 2019 Applications for Consideration

Recommended Projects/Funding Amounts

Qualifications for funding

Applications may be submitted for one of three categories.

  • Site-specific - construction or improvement of traffic safety and operations at a specific site or corridor with a crash history
  • Traffic control devices - purchase of materials for installation of new traffic control devices, such as signs, signals or pavement markings; or replacement of obsolete signs or signals
  • Research, studies and public information - transportation safety research, studies or public information initiatives, such as signing or pavement marking research, driver education/information, work zone safety, and crash data analysis improvements


Type of submittal required

Application form and instructions are available at the bottom of this page and should be submitted electronically.

Maximum funding

TSF awards cannot exceed $500,000 per project.

Type of approval required

Applications are reviewed by an internal/external committee of representatives from cities, counties and the Iowa DOT. Recommendations are then made to the Iowa Transportation Commission, which then approves funding of specific projects.

  • Site-specific projects are evaluated by benefit/cost ratio analysis and other criteria.
  • Funding for traffic control devices is awarded considering the safety benefits of eligible applications, annual funding level and other criteria.
  • Funding for research, studies and public information initiatives is awarded considering their relationship to safety, annual funding level and other criteria.


Program’s annual funding level

One half of one percent (0.5 percent) of Iowa’s Road Use Tax Fund.

  • $500,000 per year for traffic control device projects
  • $500,000 per year for research, studies and public information initiatives
  • Remainder available for site-specific projects (Amount varies by year - historically the amount ranges between $5 and $6 million per year.)


Important dates

Applications are not accepted after August 15, 2017.
Notice of approval will be sent by mid-December 2017, and funds will be available on July 1, 2018. Funding for approved projects may be available sooner, if requested, and on a case-by-case basis.

Where to send applications

Applications may be submitted by hard copy or electronically (as .xls, .xlsx, .doc, .docx, or .pdf) to

For questions please contact:

Office of Traffic and Safety
Iowa Department of Transportation
800 Lincoln Way
Ames, IA 50010
Phone: 515-239-1401

Forms and Links

  • Benefit/Cost Worksheet (128k) [Rev.June 2016] - Includes B/C worksheets for both roadway segments and intersections/spot locations.
    Crash reduction factors should be obtained from the Crash modification Factor Clearinghouse Web site,
For information about other funding sources, see the Iowa DOT Funding Guide.