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In a Simulation for Multi-Intersection Traffic Light Control, Average Waiting Time was Reduced by 6.42 Seconds and Average Speed Increased by 1.57 m/s for the Trained Controller versus the Fixed-Timing Controller.

METHODOLOGY For single-intersection traffic light control, extensive analysis, conducted over 400 episodes using the SUMO traffic simulation, focused on evaluating the effectiveness of three distinct…
Content type
Date Posted
08/28/2025
Taxonomy (ARC-IT) Traffic Signal Control (TM03)

A Simulation Study on Dynamic Speed Harmonization (DSH) Found That Implementing DSH With a 10 Market Penetration Rate of Connected and Automated Vehicles (CAVs) Led to a 9.6 Percentage Point Reduction in Collision Probability.

METHODOLOGY The study used the simulation model of the 1.4-mile-long freeway segment of I-80 in District 4 of California as a test bed and used Caltrans Performance Measurement System (PeMS) data.…
Content type
Date Posted
02/25/2025
Taxonomy (ARC-IT) Speed Harmonization (TM21)

Implementation of Connected Vehicle Technologies in Connecticut Revealed Benefits with a 90 Percent Reduction in Collision Risk Due to a Cloud-Based Digital Alert System Protecting Roadside Workers.

METHODOLOGY This summary focus on the six CV deployments. CV technologies use Vehicle-to-everything (V2X) communications to enhance road safety, efficiency, and mobility. These systems gather data…
Content type
Date Posted
07/30/2024

Implementation of Digital Infrastructure Technologies in Florida Revealed a 93 Percent Increase in the Proportion of Compliant Trucks Bypassing the Weigh Stations.

METHODOLOGY This summary focus on the 12 DI deployments. According to ITS America, DI is the data, communication systems, servers, routers, hardware, sensors, software applications, and…
Content type
Date Posted
07/30/2024

Educate Personnel on Machine Learning Fundamentals and Set Realistic Expectations Early On.

The study gathered information from five case studies on ML applications through interviews with state DOTs. Some key lessons learned are presented below. Educate Personnel on Machine Learning…
Content type
Date Posted
12/27/2024

Showcase Vehicle and Station Prototype Technology To Help Agencies and Communities Better Envision Planned Bus Rapid Transit (BRT) Systems.

Recommendations and best practices for BRT planning and implementation: Conduct targeted outreach to business owners along the planned BRT corridor prior to any construction work. Peers have…
Content type
Date Posted
10/30/2023

Consider Both Cost and Productivity When Evaluating the Financial Viability of Bus Rapid Transit Systems.

Recommendations and best practices for BRT planning and project delivery: Regularly update and assess a comprehensive risk register to ensure project stability. It was suggested in this study to…
Content type
Date Posted
10/30/2023