On April 1, WTS Philadelphia members tuned into a virtual webinar titled, “Updates and Insights on the Revised MUTCD” to learn about the features of the 11th Edition of the Manual on Uniform Traffic Control Devices (MUTCD), including updated guidance for modern traffic control devices (TCDs), particularly in response to advancements in automated and connected vehicle technologies.

Jason Bewley, PE, a Senior Civil Engineer Manager for the PennDOT Highway Safety and Traffic Operations (HSTO) Division in Harrisburg was the presenter.  He began by offering several key considerations, among them:

• Automated Vehicle Integration: The MUTCD now includes provisions for traffic control devices designed to accommodate automated vehicles (AVs), ensuring uniformity in signage, markings, and signals.
• Connected Vehicle Technology: The manual acknowledges the role of vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communication, which enhances roadway safety and efficiency.
• Standardization for Digital Infrastructure: While the MUTCD does not regulate digital infrastructure, it provides guidance on uniformity in physical traffic control devices to support automation.
• Mixed Fleet Considerations: The manual emphasizes the need for traffic control devices that serve both human drivers and machine-led vehicles, ensuring a smooth transition to automated transportation.

He then talked about the key changes between the 2009 and 2023 Editions of the MUTCD. The newest version of the manual now includes the following:

• Automated Vehicle Considerations: New guidance for traffic control devices supporting autonomous vehicles.
• Pedestrian Safety Enhancements: Inclusion of Rectangular Rapid Flashing Beacons (RRFBs) for pedestrian crossings.
• Speed Limit Setting: The 85th percentile rule is no longer the primary factor for setting speed limits on urban and suburban arterials.
• Separated Bike Lanes: Officially recognized in the MUTCD, providing clearer guidance for bicycle infrastructure.
• Temporary Traffic Control Improvements: Revised protocols for work zones, school areas, and driveway signals.

He concluded by saying that in summary, the MUTCD 11th Edition represents a crucial step forward in traffic control standards, integrating advancements in technology while prioritizing safety and efficiency for all road users. The event, which offered 1 PDH, was attended by 45 people.