These filters require pressing "Search" to apply.

Following the Implementation of an Overheight Vehicle Detection System, No Bridge Strikes Were Reported at the Historically Problematic Low-Clearance Overpass in Maine.

METHODOLOGY The DMS in Maine displays a variety of information, including weather and roadway conditions, special events, travel times, enforcement actions, and congestion management. For the VSLS…
Content type
Date Posted
07/27/2023

Leveraging Variable Message Signs (VMS) and Adaptive Signal Control to Inform and Regulate Travelers Reduced 10 to 20 Percent Peak Time Traffic for Central London During Olympics Game Event.

METHODOLOGY A dedicated 109-mile Game Lane route (Olympic Route Network [ORN]) was established for the Olympic Games, connecting Heathrow Airport to the main event sites in central and east London.…
Content type
Date Posted
06/30/2023

Driver Assist Systems to Support Bus-on-Shoulder Operations Yielded 66 Percent Improvement in Customer Satisfaction with Mixed Results in Route Performance and Safety.

METHODOLOGY An independent evaluation of the Gen2 DAS-equipped buses was conducted over 12 months, starting in March 2017 in five core areas, namely route system performance, customer satisfaction,…
Content type
Date Posted
07/18/2022

Provide Drivers with Messages for Lane Drop Points Further Upstream of the Merging Point when Implementing Part-Time Use of the Inside Shoulder.

Terminate the Flex lane into a deceleration lane or at a system interchange to optimize performance, safety, and perceptions. This study provided ample evidence that corridors ending with a lane…
Content type
Date Posted
05/25/2022

Deployment of an Active Traffic Management System with a Dynamic Shoulder Lane in Michigan Reduced Crashes by 17 Percent and Yielded a Benefit-Cost Ratio of Up to 3.01.

Methodology Changes in average speeds, travel times and various travel time reliability measures along the corridor were quantified using a before-after comparison. Incident clearance and special…
Content type
Date Posted
05/25/2022

Simulation Study Estimated Benefit-to-Cost Ratios up to 44.1 for Various Dynamic Bottleneck Mitigation Strategies.

METHODOLOGY Bottleneck solutions in this report are divided into three categories. First, there is a playbook of 70 bottleneck solutions, which are further divided into seven categories classified by…
Content type
Date Posted
12/27/2021

San Francisco Transit-Only Lane Enforcement Program Appears to Change Motorist Behavior and Reduce the Frequency of Repeat Offenders with Only a One Percent Repeat Vehicle Citation Comparing 2013 to 2014.

With the Transit-Only Lane Enforcement (TOLE) program in place, San Francisco has been able to change motorist behavior and reduce the frequency of repeat offenders obstructing transit-only lanes.…
Content type
Date Posted
12/17/2020

San Francisco Transit-Only Lane Enforcement Program Reduced Delays to Transit Vehicles by 3 to 20 percent.

The Transit-Only Lane Enforcement (TOLE) program showed promising results reducing major delays to transit vehicles along TOLE corridors. The 38L-Geary achieved a 3 percent daily and 7 percent…
Content type
Date Posted
12/01/2020