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Traffic Guidance Documents

This page contains useful information for traffic professionals working on INDOT projects. While not official policy, the information on this page provides guidance, best practices, and expectations to be followed. This is intended to be a supplement to existing standards and policy, such as the Indiana Design Manual. The table below contains parts of the Traffic Engineering Manual organized by topic. Over time as new material is added and older material is updated, these will be revised. When Traffic Engineering Guidance Documents are updated, notifications will be shared via the INDOT Design Consultants listserv. Subscribe here.

INDOT Traffic Engineering Manual

The table below contains parts of the Traffic Engineering Manual organized by topic. Over time as new material is added and older material is updated, these will be revised.

Part A - Project Development

Part Title
A1 Intersection Control Evaluation

Part B - Traffic Safety

Part Title
B1 Indiana HSIP Manual
B2 Traffic Safety Asset Management Business Rules (Aug 2026)
B3 Sidewalk Funding Team Business Rules V26.1
B4 Crash Modification Factors for Indiana
B5 Local Government HSIP Guidelines
B6 Indiana AASHTOWare Safety User Guide
B7 Road Safety Audit Procedures
B8 Indiana Crash Severity Guidelines

Part C - Traffic Mobility Analysis Procedures

Part Title
C1 Intersection Traffic Analysis Procedures

Part D - Interstate Access

Part Title
D1 Interstate Access Programmatic Agreement
D2 Interstate Access Request Procedures

Part E - Traffic Design

Part Title
E1 N/A                                                              

Part F - Traffic Administration

Part Title
F1 N/A                                                              

Traffic Engineering References

Part A - Project Development

Part B - Traffic Safety

Part C - Traffic Mobility

Part D - Interstate Access

Part E - Traffic Design

  • Coming Soon

Part F - Traffic Administration

Traffic Design Aids

Additional traffic-specific design aids are also posted on the Highway Engineering webpage and can be accessed here.

Frequently Asked Questions

Have your project manager contact the Office of Traffic Safety to request this data.

The Traffic Engineering Division advertises periodic opportunities for Traffic Engineering-related PE contracts. To apply visit the INDOT RFP Page here: https://pscsrfp.indot.in.gov/Rfp/TwelveMonthRfp

The Traffic Engineering Division reviews specific elements of design plans on all projects funded through Traffic Engineering programs (safety and mobility), or that include major traffic elements (signals, overhead signs, lighting, etc.), and coordinates with other divisions at INDOT on the review of non-traffic elements. For any project funded through the Traffic Engineering program(s), a member of the Division will reach out with review comments.

The Traffic Engineering Division cannot answer specific questions about any posted RFPs. Questions should be submitted through PSCS.

The Traffic Mobility Office handles all requests for new access to the Interstate system.

Work with your INDOT project manager to determine if INDOT will collect traffic counts or already has them for the location, or if your firm will be expected to collect the counts. For traffic growth rates, the INDOT project manager should contact the Traffic Engineering Division.

The appropriate district permits team reviews all changes or access requests to the state highway system in coordination with the Traffic Engineering Division when necessary. Visit https://www.in.gov/indot/doing-business-with-indot/permits/ for more information.

Any variation from the scoping document should be coordinated with the INDOT Traffic Engineering Division and the engineer who prepared the scoping document.

The Traffic Engineering Division can be contacted through your project manager, district permit team, or INDOT4U customer service portal, as appropriate depending on the nature of the question.