Traffic Impact Studies in Hamilton

Understanding the Transportation Requirements for Your Development

A Transportation Assessment (TA), historically referred to as a Transportation Impact Study (TIS), evaluates how a proposed development will affect Hamilton’s existing and future transportation network. The assessment identifies potential traffic, capacity and safety issues and recommends improvements needed to accommodate development while supporting a safe, efficient and accessible transportation system.

The City of Hamilton’s 2024 Transportation Assessment Guidelines take a multimodal approach, considering pedestrians, cyclists, public transit, passenger vehicles and heavy vehicles. The assessment helps inform development approvals, site access design, infrastructure requirements and potential improvements to surrounding streets.

What Does the Transportation Assessment Process Involve?

1. Confirming the Study Requirements

The process begins with consultation with Hamilton’s Transportation Planning staff to establish whether an assessment is required and determine its scope. Depending on the proposal, the City may require a trip generation letter or memo, a full Transportation Assessment, or a reduced-scope assessment. Additional specialized transportation studies may also be required.

2. Reviewing Existing Conditions

The consultant documents existing traffic volumes, intersection operations, road classifications, traffic controls, transit services and relevant pedestrian and cycling infrastructure. The assessment also considers surrounding development applications, planned transportation improvements and background traffic growth to establish realistic future conditions.

3. Forecasting and Analyzing Future Travel Demand

The study estimates the trips generated by the proposed development, their distribution across the transportation network and the resulting traffic volumes during relevant peak periods. Future scenarios are evaluated to identify potential congestion, intersection capacity constraints, vehicle queues, access conflicts and other operational concerns.

4. Assessing All Modes of Travel

Hamilton’s guidelines emphasize evaluating transportation performance beyond vehicle capacity. Where required, a Multi-Modal Level of Service (MMLOS) assessment examines the quality of the transportation environment for different users. The analysis considers how street design and development-related changes affect pedestrians, cyclists, transit users and motorists, with opportunities to improve safety, accessibility and network connectivity.

5. Recommending Improvements and Preparing the Report

The consultant identifies and evaluates mitigation options, which may include intersection modifications, turning lanes, traffic signals, access improvements, pedestrian and cycling facilities, or changes to site circulation. The final report documents the methodology, assumptions, forecasts, operational analyses, recommended improvements and implementation strategy. It must be signed, dated and stamped by a Professional Engineer licensed in Ontario.

What Makes Hamilton’s Requirements Distinctive?

Complete Streets and multimodal performance: Hamilton’s approach considers the needs of people travelling by different modes and abilities. The assessment is informed by the City’s Complete Streets Design Manual, Cycling Master Plan and Pedestrian Mobility Plan, supporting transportation infrastructure that balances safety, accessibility and operational performance.

Multi-Modal Level of Service (MMLOS): Where required by Transportation Planning, MMLOS provides a structured way to assess transportation conditions for pedestrians, cyclists, transit users and motorists. The process establishes performance targets, identifies trade-offs between competing transportation needs and develops mitigation strategies to improve the overall network.

A clear assessment hierarchy: Hamilton’s guidelines distinguish between a trip generation letter or memo, a full Transportation Assessment and other specialized transportation studies. This allows the scope to reflect the development’s anticipated impacts rather than automatically requiring the same level of analysis for every application.

A 100-trip screening threshold: A Transportation Assessment is typically required for developments expected to generate more than 100 trips during any peak hour. It may also be required for Official Plan Amendments, major Zoning By-law Amendments, proposals inconsistent with applicable transportation plans, developments involving new signals or roundabouts, and projects that may create operational or safety concerns. The City retains discretion to require an assessment for any development application.

Separate technical studies where warranted: Additional requirements may include a Parking Analysis, Transit Assessment, Transportation Demand Management Options Report, Pedestrian Route and Sidewalk Analysis, Cycling Route Analysis, Roadway Development Safety Audit or roundabout analysis. These can be incorporated into a broader submission but must be presented as complete, separately identified sections.

Defined modelling and submission standards: The guidelines establish expectations for traffic forecasting, intersection capacity analysis, queue assessment, supporting electronic modelling files and functional design drawings. This promotes consistency in technical submissions and supports discussions about infrastructure improvements, implementation responsibilities and potential cost-sharing.

Plan Ahead for Development Approval

Early consultation with Hamilton Transportation Planning staff helps confirm the appropriate assessment type, identify additional study requirements and establish the analysis methodology before detailed work begins. Incorporating transportation considerations early in the development design can help identify constraints, coordinate infrastructure improvements and support a more efficient application review process.

Reference: City of Hamilton — Transportation Assessment Guidelines, 2024. Requirements depend on the development proposal and the scope confirmed with City staff.

Our team has in-depth expertise at conducting these assessments. Contact us today to find out how we can help with your project.