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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
Benefit
Date Posted
12/27/2021
Taxonomy (ARC-IT) Intermittent Bus Lanes (PT10), Integrated Decision Support and Demand Management (TM09), Dynamic Lane Management and Shoulder Use (TM22), Restricted Lane Warnings (VS10), Regional Traffic Management (TM07)
Geolocation links
Virginia, United States   |   Maryland, United States

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
Benefit
Date Posted
12/17/2020
Taxonomy (ARC-IT) Intermittent Bus Lanes (PT10), Integrated Decision Support and Demand Management (TM09), Dynamic Lane Management and Shoulder Use (TM22), Restricted Lane Warnings (VS10)
Geolocation links
San Francisco, California, United States

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
Benefit
Date Posted
12/01/2020
Taxonomy (ARC-IT) Intermittent Bus Lanes (PT10), Integrated Decision Support and Demand Management (TM09), Dynamic Lane Management and Shoulder Use (TM22), Restricted Lane Warnings (VS10)
Geolocation links
San Francisco, California, United States

Simulation shows V2I applications that use real-time traffic data to recommend merge maneuvers can increase throughput 18 to 22 percent compared to existing systems that use message displays on overhead gantries.

FINDINGS The proposed application was able to provide more efficient and cooperative merging when needed. The CAV enabled LCS application consistently outperformed the traditional LCS application…
Content type
Benefit
Date Posted
10/17/2019
Taxonomy (ARC-IT) Intermittent Bus Lanes (PT10), Regional Traffic Management (TM07), Integrated Decision Support and Demand Management (TM09), Restricted Lane Warnings (VS10)
Geolocation links
Virginia, United States

Simulation shows an optimized CAV control framework can increase the effective capacity of high-volume corridors.

FINDINGS The study found that the introduction of control zones and the optimal control framework significantly decreased following distances for both local and highway traffic. This was primarily…
Content type
Benefit
Date Posted
05/06/2019
Taxonomy (ARC-IT) Intermittent Bus Lanes (PT10), Regional Traffic Management (TM07), Integrated Decision Support and Demand Management (TM09), Speed Harmonization (TM21), Dynamic Lane Management and Shoulder Use (TM22), Restricted Lane Warnings (VS10), Infrastructure Enhanced Cooperative Adaptive Cruise Control (VS15)
Geolocation links
Newark, Delaware, United States

A Federal report highlights best practices for ITS programs that plan to implement connected vehicle (CV) technology.

The following are several recommendations presented in the report that highlight the range of issues agencies need to consider within short-, medium-, and long-term transportation planning efforts:…
Content type
Lesson
Date Posted
03/26/2019
Taxonomy (ARC-IT) Infrastructure-Based Traffic Surveillance (TM01), Integrated Decision Support and Demand Management (TM09), Traffic Signal Control (TM03), Connected Vehicle Traffic Signal System (TM04), Emissions Monitoring (ST01), Eco-Traffic Signal Timing (ST02), Eco-Traffic Metering (ST03), Eco-Approach and Departure at Signalized Intersections (ST08), Infrastructure Enhanced Cooperative Adaptive Cruise Control (VS15), Connected Eco-Driving (ST09), Automated Vehicle Operations (VS16), Intermittent Bus Lanes (PT10), Regional Traffic Management (TM07), Restricted Lane Warnings (VS10)
Geolocation links
Nationwide, United States

Consider road geometry carefully before implementing part-time shoulder use lanes.

The researchers' literature review revealed that the benefits of PTSU can vary dramatically. In one implementation, travel time was reduced to 16 percent of what it had been previously, while others…
Content type
Lesson
Date Posted
12/26/2018
Taxonomy (ARC-IT) Intermittent Bus Lanes (PT10), Integrated Decision Support and Demand Management (TM09), Dynamic Lane Management and Shoulder Use (TM22), Restricted Lane Warnings (VS10)
Geolocation links
Philadelphia, Pennsylvania, United States

In a recurring congestion scenario, ramp metering, variable speed limits, and hard shoulder running found to improve corridor travel time and network performance by 5 to 16 percent.

FINDINGS   For the recurring congestion scenario, ramp metering, variable speed limits, and hard shoulder running were found to improve the corridor travel time and network performance for…
Content type
Benefit
Date Posted
12/26/2018
Taxonomy (ARC-IT) Intermittent Bus Lanes (PT10), Emissions Monitoring (ST01), Eco-Traffic Metering (ST03), Infrastructure-Based Traffic Surveillance (TM01), Traffic Metering (TM05), Regional Traffic Management (TM07), Integrated Decision Support and Demand Management (TM09), Variable Speed Limits (TM20), Restricted Lane Warnings (VS10)
Geolocation links
Williamson County, Texas, United States

An Active Traffic Management System (ATM) on I-66 in Northern Virginia reduced total (all severity), multiple-vehicle (all severity), and rear-end (all severity) crashes, 6 percent, 10 percent, and 11 percent, respectively.

FINDINGS The safety evaluation showed 6 percent, 10 percent, and 11 percent reductions in total (all severity), multiple-vehicle (all severity), and rear-end (all severity) crashes, respectively.…
Content type
Benefit
Date Posted
12/26/2018
Taxonomy (ARC-IT) Intermittent Bus Lanes (PT10), Regional Traffic Management (TM07), Integrated Decision Support and Demand Management (TM09), Restricted Lane Warnings (VS10)
Geolocation links
Fairfax County, Virginia, United States

Part-time shoulder simulated to decrease travel time by up to 1.86 minutes per kilometer along congested segments of Philadelphia interstate.

FINDINGS The overall travel time reductions were found to range from 0 to 1.86 minutes per kilometer of road. This is notably greater than the literature's overall range of impacts, which were 0.…
Content type
Benefit
Date Posted
12/26/2018
Taxonomy (ARC-IT) Intermittent Bus Lanes (PT10), Regional Traffic Management (TM07), Integrated Decision Support and Demand Management (TM09), Restricted Lane Warnings (VS10)
Geolocation links
Philadelphia, Pennsylvania, United States
ITS Deployment Evaluation

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