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Traffic Impact Studies

Navigating the development process and reviewing traffic impact studies is a challenge for communities. City staff and developers often have different expectations about what area should be studied and what traffic conditions are considered acceptable. These differing expectations often occur because communities do not have clearly defined impact study policies. The OTO has developed model guidelines for a tiered approach to traffic impact studies. These guidelines include clear standards and expectations, for both the city and the developer.

Below you will find the policy memo, support materials, and example reports. These materials should help communities implement improved, more efficient, traffic impact study policies.

TIS Memo

Transportation Impact Study Guidelines

Policy Memo

Supporting Materials

To assist communities with implementation, we have developed two supporting documents. The first is a flow chart to visually outline the steps involved in this tiered process. The second is a submittal checklist communities can provide to applicants. This checklist will help reduce the number of submittal revisions.

TIS Flow Chart

Process Flow Chart

TIS Checklist

Submittal Checklist

Example Reports

Example reports for each level of TIS review are available below. These examples can be shared with developers to establish clear expectations when transitioning to this tiered approach to impact studies


Level I

Example Technical Memo


Level II

Example Report

L3 Snip

Level III

Example Report


Level IV

Example Report

PT Asnip

Preliminary Transportation Assessment

Example Memo


TIS Addendum

Example Memo

Explore the latest publications from Ozarks Transportation Organization.

2012 2018 Units Added



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Agendas & Minutes

Asset 31


Long Range Transportation Plan

RBPTIS Cover Clip


Plans, Reports, and Studies




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