Search | ITS Deployment Evaluation

Date Posted

07/25/2023

Taxonomy (ARC-IT) Infrastructure-Based Traffic Surveillance (TM01)

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Sacramento, California, United States | San Diego, California, United States

Have a Basic Level of Data, Data Exchange, and Situational Awareness Capabilities for Future Integrated Corridor Management Systems and Establish Effective Standards to Support Large-Scale Data Volumes and Data Exchange.

Some key lessons learned and recommendations for large scale traffic management across multiple ICMs are listed below: Have a basic level of data, data exchange, and situational awareness…

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Date Posted

04/28/2023

Taxonomy (ARC-IT) Integrated Decision Support and Demand Management (TM09)

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Los Angeles, California, United States | San Diego, California, United States | Orange County, California, United States

AV Microsimulation Findings Reveal an AV-Exclusive Lane May Increase Traffic Flow and Density by up to 14 Percent and 24 Percent, Respectively.

METHODOLOGY The traffic simulation modeled three different scenarios: Scenario Description AV MPR Modeled 1 existing volumes/network 0 percent 2 existing volumes with AV adoption on all…

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Date Posted

10/27/2021

Taxonomy (ARC-IT) Regional Traffic Management (TM07)

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Signage such as “Keep Lane Assist On” is Recommended for All Levels of Vehicle Automation, Especially for Lower Levels of Automation.

Use highly reflective, clearly visible, and distinct lane markings and signage for proper AV sensor operation. Improve striping on gore and ramp areas to enhance machine vision systems’ performance…

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Date Posted

10/27/2021

Taxonomy (ARC-IT) Autonomous Vehicle Safety Systems (VS01), Infrastructure Enhanced Cooperative Adaptive Cruise Control (VS15), Automated Vehicle Operations (VS16), Regional Traffic Management (TM07)

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Field Tests on State Route 78 in California Showed That Variable Speed Advisory (VSA) Signs Can Increase Average Travel Speeds by 8.71 Percent During Morning Peak Hours.

METHODOLOGY This study first tested the VSA algorithm in a microsimulation model to replicate the actual freeway environment and then implemented it in the field. A website for real-time traffic…

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Date Posted

10/22/2021

Taxonomy (ARC-IT) Variable Speed Limits (TM20)

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The Distance Between Consecutive Variable Speed Advisory (VSA) Signs Installed on State Highways Should Not Be Greater Than One-Half Mile According to a Caltrans Field Study.

The following were lessons learned from field testing. Implement VSA sign with radar detection to better estimate the mainline traffic and to evaluate driver compliance using traffic speed and…

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Date Posted

10/22/2021

Taxonomy (ARC-IT) Variable Speed Limits (TM20)

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The cost to design and implement a mobile transit fare payment ticketing system for a medium sized city was estimated at $34.2 million.

In December of 2018, the San Diego Metropolitan Transit System procured a new fare payment system in order to update its existing system, which had been procured in 2003. It found that its fare…

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System Cost

Made Public Date

04/17/2020

Taxonomy (ARC-IT) Transit Fare Collection Management (PT04)

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Agencies that manage multimodal transportation corridors can use AMS methodology with ICM decision support systems to facilitate predictive, real-time, and scenario-based decision-making.

AMS aids in the broader goals of ICM Evaluation by providing a framework that can be used to quantify potential and actual benefits of localized ICM strategies. In San Diego, AMS instigated the use…

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Date Posted

06/21/2018

Taxonomy (ARC-IT) Traffic Information Dissemination (TM06), Integrated Decision Support and Demand Management (TM09), Intermittent Bus Lanes (PT10), Dynamic Lane Management and Shoulder Use (TM22), Restricted Lane Warnings (VS10), Traffic Signal Control (TM03), Road Use Charging (TM11), HOV/HOT Lane Management (ST06), Emissions Monitoring (ST01), Eco-Traffic Metering (ST03), Traffic Metering (TM05), Personalized Traveler Information (TI02)

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In San Diego, ICM improves mobility for most commuters on I-15 saving them more than 1,400 person hours each day during peak commute periods.

FINDINGS Based on a cluster analysis representing weekday travel characteristics, travel times improved in two peak directions as a result of ICM on I-15. The following overall findings were…

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Date Posted

06/19/2018

Taxonomy (ARC-IT) Intermittent Bus Lanes (PT10), HOV/HOT Lane Management (ST06), Traffic Information Dissemination (TM06), Integrated Decision Support and Demand Management (TM09), Road Use Charging (TM11), Dynamic Lane Management and Shoulder Use (TM22), Restricted Lane Warnings (VS10)

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The cost to evaluate ICM using AMS tools was estimated at five percent of the deployment budget.

The focus of the ICM Post-Deployment assessment was to investigate the impacts of ICM in its "as deployed" state in San Diego, California using Analysis, Modeling and Simulation (AMS) tools.…

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System Cost

Made Public Date

06/19/2018

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), HOV/HOT Lane Management (ST06), Road Use Charging (TM11), Traffic Information Dissemination (TM06)

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