Traffic Management Advisory Committee

The Traffic Management Advisory Committee (TMAC) is a regional forum to discuss incident management, traffic management, and intelligent transportation systems.

TMAC meets from 10-11 AM on the first Wednesday of each quarter in-person at Polk County Emergency Management and virtually on Zoom. The meetings are open to the public.

TMAC 2023 Meeting Dates

  • March 1, 2023
  • June 7, 2023
  • September 6, 2023
  • December 6, 2023

Prior Meeting Topics

  • Construction Updates
  • Best Practices
    • Identifying Unified Command / February 4, 2021 I-80 Incident After-Action Review
    • Standardizing incident response practices and public education amidst COVID
    • Removing stalled vehicles on Interstates quickly (law change)
    • Reducing speeding and fatalities/serious injuries / Iowa Fatalities Reduction Taskforce
    • Effectiveness of implemented traffic safety measures
  • Towing and Recovery
    • Sending Pictures to Towers to Prepare the Appropriate Equipment
    • Minimizing calls to multiple towers from the same person
    • Researching the percentage of at-fault vehicle owners who are uninsured (government has to fund repairs)
  • Communications and Cooperation
    • Maintaining and strengthening communications and relationships among agencies
    • Post-incident debriefings and encouraging multi-agency trainings, such as with towing

  • Best Practices
    • Emergency Vehicle Warning Best Practices
    • Distracted Driving and Countermeasures
    • Metro-wide Training Handout (Services Book) on Available Training
  • Construction
    • Construction within the MPO and Continued Construction Updates
    • Workzone Safety Initiatives
    • Information on Planned Safety Improvements on Major Roadways
  • Incident Response and Management (Discussed in July 2020 Meeting)
    • Quick Clearance
    • Better Local Agency Access to Traffic Cameras
    • Sharing Resources for Incidents
    • Lane Closure Management Across the Metro
  • Infrastructure and Technology
    • Outdated Infrastructure
    • Connected Vehicles
    • FirstNet
  • Towing
    • Towing Company Safety
    • Towing Recovery Incentive Program (TRIP)
    • Information and Sharing with Towing Companies

TMAC Affiliations

Free National Traffic Incident Management (TIM) Responder Training



Supplemental Items

March 2023Presentation
Governor’s Traffic Safety Bureau (GTSB) February 2023 Report
Governor’s Traffic Safety Bureau (GTSB) January 2023 Report
Governor’s Traffic Safety Bureau (GTSB) December 2022 Report
Governor’s Traffic Safety Bureau (GTSB) November 2022 Report
September 2022PresentationGovernor’s Traffic Safety Bureau (GTSB) September 2022 Report
Governor’s Traffic Safety Bureau (GTSB) August 2022 Report
June 2022PresentationMPO Draft Model Bicycle and Micromobility Ordinance
Governor’s Traffic Safety Bureau (GTSB) May 2022 Report
Governor’s Traffic Safety Bureau (GTSB) April 2022 Report
March 2022Presentation2021 Crashes Characteristics Report
Governor’s Traffic Safety Bureau (GTSB) March 2022 Report
Iowa DOT March 21 TIM Training Announcement
Des Moines ICM Handout
January and February 2022Governor’s Traffic Safety Bureau (GTSB) February 2022 Report
Governor’s Traffic Safety Bureau (GTSB) January 2022 Report
September 2021Presentation
August 2021Governor’s Traffic Safety Bureau Conference
OWI and Traffic Update Presentation Slides
OWI Updates May 2021
July 2021Governor’s Traffic Safety Bureau (GTSB) July 2021 Report
NHTSA Interim Guidance for Electric and Hybrid-Electric Vehicles Equipped with High-Voltage Batteries
NTSB Safety Report: Safety Risks to Emergency Responders from Lithium-Ion Battery Fires in Electric Vehicles
June 2021PresentationGovernor’s Traffic Safety Bureau (GTSB) June 2021 Report
April and May 2021Governor’s Traffic Safety Bureau (GTSB) May 2021 Report
MDST Quarterly Newsletter May 2021
Governor’s Traffic Safety Bureau (GTSB) April 2021 Report
March 2021PresentationMPO CY 2017-2021 Safety Targets Report
MPO CY 2020 Fatal and Serious Injury Crash Characteristics Report
Governor’s Traffic Safety Bureau (GTSB) March 2021 Report
January and February 2021Governor’s Traffic Safety Bureau (GTSB) February 2021 Report
Governor’s Traffic Safety Bureau (GTSB) January 2021 Report
December 2020 Governor’s Traffic Safety Bureau (GTSB) December 2020 Report
November 2020PresentationGovernor’s Traffic Safety Bureau (GTSB) November 2020 Report
Des Moines Integrated Corridor Management (ICM) Freeway Solutions Group Invitation
October 2020PresentationGovernor’s Traffic Safety Bureau (GTSB) October 2020 Report
September 2020PresentationGovernor’s Traffic Safety Bureau (GTSB) September 2020 Report
Des Moines Area Regional Intelligent Transportation Systems (ITS) Architecture Update August 2009
August 2020PresentationGovernor’s Traffic Safety Bureau (GTSB) August 2020 Report (PDF)
Governor’s Traffic Safety Bureau (GTSB) August 2020 Report (PPT)
July 2020PresentationDiscussion Summaries
Governor’s Traffic Safety Bureau (GTSB) July 2020 Report
June 2020Des Moines ICM Presentation
FirstNet Presentation
Governor’s Traffic Safety Bureau (GTSB) June 2020 Report
Des Moines ICM – Active Traffic Management Cutsheets
Des Moines ICM – Advanced Freeway Management Strategies
May 2020Governor’s Traffic Safety Bureau (GTSB) May 2020 Report
April 2020Governor’s Traffic Safety Bureau (GTSB) April 2020 Report
February 2020PresentationGovernor’s Traffic Safety Bureau (GTSB) February/March 2020 Report
MPO 2016-2020 Safety Targets Report
December 2019Presentation 
November 2019PresentationRevised Model Bicycle Ordinance 10172019
October 2019PresentationMidwest Traffic Incident Management Safety Summit Materials:
Move Over Card
ICAT Business Card
Heavy Truck Crash Tool
Motorcycle Crash Tool
4 to 3 Lane Conversion Flyer
Commercial Press Cannabis Impairment Quick Assessment
High Tension Cable Barrier Untangled
Gibraltar Cable Barrier Systems Presentation
Steer It Clear it
Multidisciplinary Safety Team (MDST) Guide
TIM Training Program Overview
TIM Field Guide
TIM Responder Training Announcement – Template
TIM Responder Training Certificate – Template
September 2019PresentationMPO Draft Model Bicycle Ordinance
Traffic Incident Management Field Guide
Traffic Incident Management Pocket Guide
February 2019MinutesIADOT D1 2019 Construction
October 2018Minutes 
February 2018Minutes 
August 2017Minutes 
May 2017MinutesStatewide Lane Reconfiguration Analysis
February 2017Minutes2017 D1 Projects
November 2016Minutes 
August 2016MinutesDes Moines Triathlon – Street Closures
Fahrrad Bike Ride – Route Map
Des Moines Marathon – Route Map
June 2016Minutes 
February 2016Minutes2016 D1 Projects
FY2016-2019 TCIP
 November 2015MinutesCMP Proposed Metrics and Threshholds

If you have an interest in any traffic management related topics, would like to be added to the TMAC mailing list and receive meeting notifications, or have any questions about the group, please call or email Zhi Chen at 515-334-0075 or   


Planning to attend a meeting?

Anyone planning to attend MPO meetings who may need auxiliary aids or services should call the Des Moines Area MPO office at 515-334-0075. Please call at least 48 hours in advance so that appropriate arrangements can be made.