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Collect traffic and travel time data from all traffic lanes because travel times can vary substantially between lanes.

Collect traffic and travel time data from all traffic lanes because travel times can vary substantially between lanes. Travel time differentials exist across freeway work zone travel lanes, which…
Content type
Date Posted
01/08/2018

Continue to promote carpooling and transit services during an incremental deployment of Express Toll lanes.

The size and scope of the Atlanta CRD projects is reflected in the lessons learned from the project, which are also broad in size and scope. Operation of HOT Lanes Frequently communicate Express…
Content type
Date Posted
05/15/2017

Identify functional boundaries and needs for cross jurisdictional control required to implement adaptive signal control and transit signal priority systems.

The following lessons were identified during the design and implementation process. Identify functional boundaries and needs for cross jurisdictional control required to implement SCATS and TSP.…
Content type
Date Posted
11/01/2011

Adopt best practices for integrating emergency information into Transportation Management Center (TMC) operations to improve performance and increase public mobility, safety and security.

Use recommended practices to provide accurate travel time messages to the public using Dynamic Message Signs (DMS).

An examination of databases and a sampling of locations reveal at least 12 metropolitan areas that are providing travel time messages on DMS. But at least 25 other metropolitan areas are gathering…
Content type
Date Posted
01/21/2007

Focus on usability when designing traffic information Web sites.

Based on interviews with developers of top traffic and transit information Web sites, recommendations were made on how Web sites should be developed, including the usability component of the Web site…
Content type
Date Posted
12/13/2006

Prepare traveler information Web sites for high usage under emergency or disaster conditions.

When implementing a new traffic information Web site, the technical staff should consider the likelihood of high usage of the system. Prepare traveler information Web sites to accommodate high…
Content type
Date Posted
12/13/2006

Address noise and disruptions to TMCs through effective anticipation and planning.

Design factors that influence long-term control center operations and maintenance are very important. This lesson recommends addressing noise and disruptions to TMCs through effective anticipation…
Content type
Date Posted
08/16/2006

Use tested and effective traffic management systems for Transportation Management Centers (TMCs).

This document provides insight into the operations at various Transportation Management Centers (TMCs) within the United States and Canada. One subject discussed in this document is the lessons…
Content type
Date Posted
08/16/2006

Select and implement security measures for Transportation Management Center (TMC) based on location and internal operations.

One subject discussed in this study is that certain security implementations should be considered for TMCs based on location and internal operations. Levels of security varied widely – some sites in…
Content type
Date Posted
08/16/2006

Use appropriate procurement methods when contracting for operations for Transportation Management Centers (TMCs).

Effective procurement techniques are key to acquiring the right facility, systems, and services at a reasonable price. The following lessons outline and suggest various procurement methods to use…
Content type
Date Posted
08/16/2006

Adopt staffing practices for successful Transportation Management Center (TMC) staff hiring and retention.

The experiences described in the Metropolitan Transportation Management Center Concepts of Operation study provide insight into the operations at various Transportation Management Centers (TMCs)…
Content type
Date Posted
08/16/2006

Choose staff training and documentation methods to match individual Transportation Management Center (TMC) needs.

An important challenge that the TMCs noted was related to selecting staff training and documentation methods to match individual Transportation Management Center (TMC) needs. Implement sufficient…
Content type
Date Posted
08/16/2006

Consider using contractors for TMC maintenance support.

One important topic highlighted by these experiences is the use of contractors for TMC maintenance support. Recognize that contractors can be effectively used for TMC maintenance support. It is…
Content type
Date Posted
08/16/2006

Select Transportation Management Center (TMC) design and location based on individual TMC needs and traffic realities.

One area discussed is the design factors that influence long-term control center operations and maintenance. One important design factor is based on considering individual TMC needs and traffic…
Content type
Date Posted
08/16/2006

Select map displays, computers, and software for transportation management centers (TMCs) that minimize cost and decrease complexity.

One subject discussed based on these experiences is that map displays, computers, and software for transportation management centers (TMCs) should be selected based on minimizing cost and complexity…
Content type
Date Posted
08/16/2006

Ensure the long-term stability of an interagency incident management program by creating dependencies and by managing for leadership succession.

Formalizing the incident management effort existing in many cities into an incident management program can make incident management a core agency activity at senior executive levels and demonstrate a…
Content type
Date Posted
06/30/2006

Solicit executive support for an incident management program, but rely on staff-level champions and administrative support for day-to-day guidance of the program.

While no single approach can be prescribed for all incident management efforts, a flexible framework based on experiences from successful incident management programs in the United States can be…
Content type
Date Posted
06/30/2006

Coordinate across jurisdictions/regions and share resources to reduce future costs and delays.

There is some form of incident management activity in most major and many mid-sized urban areas. Typically this involves each agency carrying out its own responsibilities, with primarily working-…
Content type
Date Posted
06/30/2006

Take advantage of time-specific opportunities to organize and build support for a formal incident management program.

The Regional Traffic Incident Management Programs: Implementation Guide aims to explain general steps to implementation (with an institutional, rather than technical, focus), and is based on…
Content type
Date Posted
06/30/2006

Utilize well-equipped safety service patrols to assist highway motorists after vehicle malfunctions or crashes, and to coordinate a safe and efficient response.

Simulation Results Revealed a V2I-based Speed Advisory System Increased the Minimum Time to Collision by an Average of 1.2 Seconds.

METHODOLOGY This study examined the effects of varying levels of SAS MPR (0%, 25%, 50%, 75%, 100%) on rear-end collision risks. Real vehicle trajectories, vehicle lengths, and signal timing were…
Content type
Date Posted
03/24/2023

Combined Variable Speed Limit and Ramp Metering System along the Atlanta Beltway Estimated to Reduce Total Travel Time by About Eight Percent.

METHODOLOGY This study proposed a combined VSL-RM algorithm designed to maximize freeway capacity by mitigating the capacity drop phenomenon at merge bottlenecks. The optimal speed of the VSL-RM…
Content type
Date Posted
03/22/2023

HOT lane conversion improved travel times during peak periods and influenced 49 percent of new I-85 Xpress bus riders to start using transit.

FINDINGS The first year of the Express Lanes produced mixed results. During peak periods, travel times and speeds improved in the Express Lanes but declined in general purpose lanes, with a…
Content type
Date Posted
05/15/2017

The benefits of multidisciplinary TIM operations yielded an annual reduction in average incident duration of 46 minutes and in secondary crashes of 69 percent in Atlanta Georgia.

FINDINGSA Case Study in Atlanta, Georgia reported the following benefits:Reduction in Average incident durations from 67 to 21 minutes.Reduction in Vehicle-hours of delay of 7.25 million over one…
Content type
Date Posted
10/03/2013

After presence detection, adaptive signal control, and transit signal priority were implemented on the Atlanta Smart Corridor total fuel consumption decreased by 34 percent across all peak periods.

METHODOLOGYA before and after study was conducted to evaluate the effectiveness of both SCATS and TSP. For the SCATS study, travel time, delay, and stop statistics were recorded from probe vehicles…
Content type
Date Posted
10/31/2011

In Georgia, the NaviGAtor incident management program reduced the average incident duration from 67 minutes to 21 minutes, saving 7.25 million vehicle-hours of delay over one year.

RESULTSThe program resulted in an average 46-minute reduction in incident duration time and reduced incident delay by 7.25 million vehicle-hours. The NaviGAtor incident management program reduced…
Content type
Date Posted
10/30/2006

In Georgia, the Navigator incident management program reduced secondary crashes from an expected 676 to 210 in the twelve months ending April 2004.

RESULTSThe incident management program reduced secondary crashes in the NaviGAtor coverage area by 69 percent. It was estimated that the secondary crash rate was reduced from 676 to 210 crashes…
Content type
Date Posted
10/30/2006

In Georgia, the NaviGAtor incident management program reduced annual fuel consumption by 6.83 million gallons, and contributed to decreased emissions: 2,457 tons less Carbon monoxide, 186 tons less hydrocarbons, and 262 tons less Nitrous oxides.

RESULTSThe incident management program reduced annual gasoline consumption by over 5.17 million gallons and decreased diesel consumption by nearly 1.66 million gallons per year. Fuel consumption…
Content type
Date Posted
10/30/2006

In Georgia, the HERO motorist assistance patrol program and NaviGAtor incident management activities saved more than 187 million dollars yielding a benefit-to-cost ratio of 4.4:1.

RESULTSThe benefits above and the value of HERO motorist assistance resulted in a cost savings of more than 187 million dollars, which was used to calculate a benefit-to-cost ratio of 4.4:1. These…
Content type
Date Posted
10/30/2006

In Atlanta, satisfaction with motorist assistance patrols ranged from 93 to greater than 95 percent in two separate surveys of drivers who were already aware of the service.

RESULTSCustomer satisfaction with the incident management program was assessed using a survey conducted in November 2002. The criteria used to select the pool of participants for the mail survey…
Content type
Date Posted
10/30/2006

In Atlanta, the cost to purchase, install, configure, and support 600 RSUs for DSRC SPaT/MAP applications was estimated at $2,490,000 (FY2018).

Transit improvements, carpooling campaign, and HOV to HOT conversion demonstration project cost $70,460,779 for capital and $55,896,725 for ongoing maintenance.

Deteriorating performance of the high occupancy vehicle (HOV) lanes on I-85 during peak periods as a result of heavy usage provided the focus of the Atlanta congestion reduction demonstration…
Content type
Made Public Date
02/14/2017

Deployment of freeway congestion pricing system in 5 major U.S. metropolitan areas estimated to cost $1.8 billion

Content references source material no longer available at its original location.
Growing congestion on metropolitan highway networks poses a substantial threat to the U.S. economy and to the quality of life of millions of Americans. Congestion pricing – sometimes called value…
Content type
Made Public Date
08/30/2014
Taxonomy (ARC-IT) Road Use Charging (TM11)

The cost to develop, implement, and document the deployment of an adaptive signal control and transit signal priority upgrade on the Atlanta Smart Corridor was estimated at $1.7 million.

The Atlanta Smart Corridor project evaluated the implementation of SCATS (Sydney Coordinated Adaptive Traffic System) and Transit Signal Priority (TSP) as an integrated system designed to improve…
Content type
Made Public Date
10/30/2011

Cost estimates of operational concepts for converting HOV lanes to managed lanes on I-75/I-575 in Georgia range from $20.9 million to $23.7 million.

Content references source material no longer available at its original location.
In 2005, the Georgia State Road and Tollway Authority (SRTA) received a grant through the Federal Highway Administration (FHWA) Value Pricing Pilot Program to investigate the application of value…
Content type
Made Public Date
07/20/2007