Traffic Engineering2018-07-05T19:51:08+00:00

Traffic Engineering

Every thriving community has to plan for growth, and traffic engineering is a pivotal piece of the puzzle when it comes to supporting new businesses and residents with appropriate transportation infrastructure to ensure communities are livable and meet all the stakeholders’ needs. TWM’s planning professionals can help develop easily implementable solutions to sustain any size development or community. Additionally, TWM can tackle multi-use projects where residential, commercial, and retail traffic solutions are improved or implemented simultaneously.

Our process takes into consideration many factors, such as technical, socio-economic, and environmental elements. We have successfully partnered with both public agencies and private developers to seamlessly plan for new residential neighborhoods, hospitals, retail developments, industrial facilities, schools, and more. We have also assisted communities with infrastructure upgrades for pre-planned improvements.



  • Traffic Study and Analysis

    • Trip Generations

    • Intersection Capacity Analysis

    • Signal and Turn Lane Warrant Analysis

    • Narrative / Memo with Recommendations for Improvements

    • Traffic Distributions

  • Traffic Signal Optimization

  • Traffic Signal Synchronization and Coordination

  • Pre-Timed vs. Actuated Signals

  • Intersection Site Distance

  • Manual and Video Traffic Counts

  • Intersection Design Study / Geometric Details

    • Geometrics

    • Capacity Charts

    • Pavement Marking

    • Signage

    • Traffic Signal Mast Arms / Posts

Exceptional Service. Nothing Less.


TWM continues the important business of supporting our nation’s essential infrastructure in these uncertain times. We are committed to our mission of providing Exceptional Service, Nothing Less to you, our clients and partners. As a professional services firm, the health of our employee-owners and their families is paramount. We are following government directives and public health guidance, implementing work-from-home and other social distancing and hand hygiene practices. We have employed additional technological resources to support our modified operating structure, and we expect to be able to do so with minimal disruption. If you need to visit our offices in person or have trouble reaching your TWM contact, please contact us at 618.624.4488 so we can make arrangements or put you in touch with the appropriate person. Thank you for placing your trust in TWM. Wishing you safety and good health.