Content that references this location
Pavement friction sensors should target travel lanes instead of shoulder areas where wet pavement can persist causing VSL systems to reduce traffic speeds without need.
Lessons learned during the three month pilot project in Texas included the following:
Pavement friction sensors should target travel lanes instead of shoulder areas where wet pavement can persist…
Content type
Date Posted
04/07/2017
Taxonomy (ARC-IT)
Variable Speed Limits (TM20)
Geolocation links
Develop a regional ITS architecture with a common data server to facilitate ITS integration in a region
The MMDI set in motion an aggressive schedule of ITS deployment in four regions: San Antonio, Phoenix, Seattle, and New York City metropolitan area (which included parts of three states, New York,…
Content type
Date Posted
05/19/2010
Identify methods to distribute automated vehicle identification tags to improve market penetration when collecting arterial travel speed information.
Traveler information is becoming increasingly important as travelers expect reliable, up-to-the-minute information on traffic conditions that may affect their commutes. San Antonio wanted to add…
Content type
Date Posted
02/29/2008
Taxonomy (ARC-IT)
Infrastructure-Based Traffic Surveillance (TM01),
Integrated Decision Support and Demand Management (TM09),
Broadcast Traveler Information (TI01),
Personnel Device Maintenance (SU13),
Personalized Traveler Information (TI02),
Trip Planning and Payment (TI04)
Geolocation links
Consider the strengths and weaknesses of distributed versus centralized ITS telecommunications systems.
One of the key decisions that an ITS implementing agency faces is the optimal level of distribution for the telecommunications system, ranging from a fully centralized system to a fully distributed…
Content type
Date Posted
02/26/2007
Geolocation links
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
Taxonomy (ARC-IT)
Traffic Information Dissemination (TM06),
Integrated Decision Support and Demand Management (TM09)
Geolocation links
Orlando, Florida, United States | San Antonio, Texas, United States | Houston, Texas, United States | Atlanta, Georgia, United States | Nashville, Tennessee, United States | Hampton Roads, Virginia, United States | Louisville, Kentucky, United States | Cincinnati, Ohio, United States | Columbus, Ohio, United States | Chicago, Illinois, United States | Detroit, Michigan, United States | Milwaukee, Wisconsin, United States
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
Consider the project needs when selecting the most appropriate procurement method.
Institutional issues will seldom cause an ITS project to come to a halt, but they can significantly impact the implementation and deployment through increased costs and delayed schedules. The…
Content type
Date Posted
08/09/2006
Geolocation links
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
Geolocation links
San Antonio, Texas, United States | Houston, Texas, United States | Atlanta, Georgia, United States | Los Angeles, California, United States | San Francisco, California, United States | Maryland, United States | Chicago, Illinois, United States | Detroit, Michigan, United States | Milwaukee, Wisconsin, United States | Seattle, Washington, United States
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
Geolocation links
San Antonio, Texas, United States | Houston, Texas, United States | Atlanta, Georgia, United States | Los Angeles, California, United States | San Francisco, California, United States | Maryland, United States | Chicago, Illinois, United States | Detroit, Michigan, United States | Milwaukee, Wisconsin, United States | Seattle, Washington, United States
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
Geolocation links
San Antonio, Texas, United States | Houston, Texas, United States | Atlanta, Georgia, United States | Los Angeles, California, United States | San Francisco, California, United States | Maryland, United States | Chicago, Illinois, United States | Detroit, Michigan, United States | Milwaukee, Wisconsin, United States | Seattle, Washington, United States
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
Geolocation links
San Antonio, Texas, United States | Houston, Texas, United States | Atlanta, Georgia, United States | Los Angeles, California, United States | San Francisco, California, United States | Maryland, United States | Chicago, Illinois, United States | Detroit, Michigan, United States | Milwaukee, Wisconsin, United States | Seattle, Washington, United States
Use a systems engineering approach for technical integration of ITS.
The key to a successful interoperable transportation system is to integrate ITS via a systems engineering approach into all stages of planning, designing and deployment of transportation projects at…
Content type
Date Posted
03/24/2006
Develop written policies that delimit the use and distribution of data.
The value of the MDI operations lay in the data that is generated by the equipment and systems involved. Data policy issues that have been reviewed and tackled by the MDI partners include resolving…
Content type
Date Posted
10/12/2005
Develop written policies to address liability issues early.
While institutional and legal impediments do exist, many of the barriers to successful ITS deployments and operations can be overcome with a consistently developed policy that has considered these…
Content type
Date Posted
10/12/2005
Overcome staff reluctance to working with ITS by promoting its benefits, soliciting staff feedback, using train-the-trainer programs, and involving union representatives.
An inflexible agency culture and organizational structure may lead to problems. Agency personnel may not accept new technologies or develop new ways of doing business, such as modifying the…
Content type
Date Posted
09/16/2005
Geolocation links
Address intellectual property rights issues early.
There is a continuing concern in the private sector that state or federal laws will require firms participating in public-private ITS partnerships to surrender valuable rights in intellectual…
Content type
Date Posted
09/16/2005
Maximize emergency resources and response by utilizing Automatic Vehicle Location (AVL) capabilities.
Maximize emergency resources and response by utilizing Automatic Vehicle Location (AVL) capabilities.
Automatic Vehicle Location (AVL) systems relay the positions of emergency vehicles to a central…
Content type
Date Posted
09/16/2005
Deploy ITS systems strategically to achieve benefits.
Use signal timing plans appropriately:
Under periods of significant diversion, San Antonio’s incident response signal timing system offers substantial benefits. However, when diversion is low,…
Content type
Date Posted
09/16/2005
Taxonomy (ARC-IT)
Traffic Information Dissemination (TM06),
Integrated Decision Support and Demand Management (TM09),
Infrastructure-Based Traffic Surveillance (TM01)
Geolocation links
Cooperate with organizations representing different operating philosophies, priorities, budgets, and constituents to integrate ITS.
The integration of ITS often requires the cooperation, if not the merging, of organizations representing different operating philosophies, priorities, budgets, and constituents.
Challenge local…
Content type
Date Posted
09/16/2005
Geolocation links
Integrate freeway and alternate route operations to achieve greater benefits.
The benefits of integrated ITS systems are mathematically greater than the sum of the benefits of the systems individually.
Integrated systems can reduce delays, improve safety, and enhance customer…
Content type
Date Posted
09/16/2005
Taxonomy (ARC-IT)
Traffic Information Dissemination (TM06),
Integrated Decision Support and Demand Management (TM09),
Infrastructure-Based Traffic Surveillance (TM01)
Geolocation links
Provide consistent and high-quality information to influence traveler behavior.
All tests evaluating user response have arrived at a uniform conclusion that travelers will act based upon information from a trusted and well understood system that provides information of value.…
Content type
Date Posted
09/16/2005
Taxonomy (ARC-IT)
Traffic Information Dissemination (TM06),
Integrated Decision Support and Demand Management (TM09),
Broadcast Traveler Information (TI01),
Personalized Traveler Information (TI02),
Personnel Device Maintenance (SU13),
Trip Planning and Payment (TI04)
Geolocation links
Focus on detection, response and clearance to improve incident management, only turn to planning diversion routes after these are as robust as possible.
Actively manage incidents to improve safety and efficiency.
In the deployments studied, safety improvements such as reductions in secondary incidents, total number of incidents, and incident…
Content type
Date Posted
09/16/2005
Taxonomy (ARC-IT)
Emergency Response (PS02),
Incident Scene Pre-Arrival Staging Guidance for Emergency Responders (PS06),
Infrastructure-Based Traffic Surveillance (TM01),
Regional Traffic Management (TM07)
Geolocation links
Variable speed limit pilot found to be effective reducing the number of overall crashes.
Benefits
During the variable speed limit pilot in Texas, two safety benefits were observed.
Total number of crashes overall was reduced.
At two of the three sites there was a reduction in the…
Content type
Date Posted
06/26/2016
Taxonomy (ARC-IT)
Variable Speed Limits (TM20)
Geolocation links
Transit Signal Priority in San Antonio’s metropolitan transit system decreases travel time by up to 20 percent.
Most notably, the Primo BRT system features a transit signal priority (TSP) solution that uses "virtual" GPS-based detection zones- the first of its kind in the U.S. The virtual detection zones are…
Content type
Date Posted
12/08/2015
Taxonomy (ARC-IT)
Transit Signal Priority (PT09)
Geolocation links
Field Evaluation of Detection Control System leaves 72 percent fewer vehicles in the dilemma zone
MethodologyA before and after study of crash data was used to evaluate the safety of the D-CS algorithm. The results were based on data for a 5-year "before" period and a 2-year "after" period,…
Content type
Date Posted
12/07/2015
Arterial information allows travelers to make more informed decisions.
Advanced Traveler Information Systems that provide both static and dynamic information on arterial roadway conditions offer benefits in customer satisfaction and improved efficiency. In surveys…
Content type
Date Posted
01/19/2007
In San Antonio, a modeling study found that if traffic congestion were to increase by 25 percent, posting nearby railroad crossing closing delays on freeway dynamic message signs would reduce total network delay by up to 6.7 percent.
RESULTS
With a 25 percent increase in congestion and a 15 percent driver compliance rate, the simulation model indicated the warning system would yield positive benefits in terms of reducing total…
Content type
Date Posted
09/19/2001
Taxonomy (ARC-IT)
In-Vehicle Signage (TI07),
Standard Railroad Grade Crossing (TM13),
Advanced Railroad Grade Crossing (TM14)
Geolocation links
In San Antonio, a modeling study found that if traffic congestion were to increase by 25 percent, posting nearby railroad crossing closing delays on freeway dynamic message signs would reduce crashes by 8.7 percent.
RESULTSWith a 20 percent driver compliance rate the crash rate would decrease by 8.7 percent.
Content type
Date Posted
09/19/2001
Taxonomy (ARC-IT)
In-Vehicle Signage (TI07),
Standard Railroad Grade Crossing (TM13),
Advanced Railroad Grade Crossing (TM14)
Geolocation links
Modeling performed as part of an evaluation of nine ITS implementation projects in San Antonio, Texas indicated that drivers of vehicles with in-vehicle navigation devices could experience an 8.1 percent reduction in delay.
Improvements to elements of San Antonio’s traveler information system included the installation of In-Vehicle Navigation (IVN) devices in vehicles operated by public agencies in the San Antonio area…
Content type
Date Posted
09/21/2000
Geolocation links
Modeling performed as part of an evaluation of nine ITS implementation projects in San Antonio, Texas indicated that users of an improved traveler information web site would receive annual benefits of a 5.4 percent reduction in delay.
Improvements to elements of San Antonio’s traveler information system included improvements to an Internet Web site. The Web site provided freeway traffic information including incident locations,…
Content type
Date Posted
09/21/2000
Taxonomy (ARC-IT)
Personnel Device Maintenance (SU13),
Personalized Traveler Information (TI02),
Trip Planning and Payment (TI04)
Geolocation links
In San Antonio, Texas, a freeway management system led to an estimated delay savings of 700 vehicle-hours per major incident.
FINDINGS
Review of video surveillance data collected throughout 1995 indicated an average reduction in response time of 20 percent. This result compared responses to incidents recorded in the months…
Content type
Date Posted
09/21/2000
Taxonomy (ARC-IT)
Traffic Information Dissemination (TM06),
Vehicle Emergency Response (PS05),
Infrastructure-Based Traffic Surveillance (TM01)
Geolocation links
Modeling performed as part of an evaluation of nine ITS implementation projects in San Antonio, Texas indicated that integrating DMS, incident management, and arterial traffic control systems could reduce delay by 5.9 percent.
The evaluation report detailed benefits information regarding the implementation of an incident management program with traveler information and dynamic message signs (DMS) along a freeway corridor…
Content type
Date Posted
09/21/2000
Taxonomy (ARC-IT)
Traffic Signal Control (TM03),
Integrated Decision Support and Demand Management (TM09),
Traffic Information Dissemination (TM06),
Vehicle Emergency Response (PS05),
Traffic Incident Management System (TM08)
Geolocation links
Evaluation of freeway DMS integrated with incident management in San Antonio, Texas, found fuel consumption reduced by 1.2 percent; integrating the DMS with arterial traffic control systems could save 1.4 percent.
The evaluation report detailed benefits information regarding the implementation of an incident management program with traveler information and dynamic message signs (DMS) along a freeway corridor…
Content type
Date Posted
09/21/2000
Taxonomy (ARC-IT)
Traffic Signal Control (TM03),
Integrated Decision Support and Demand Management (TM09),
Traffic Information Dissemination (TM06),
Vehicle Emergency Response (PS05),
Traffic Incident Management System (TM08)
Geolocation links
In San Antonio, Texas, focus group participants felt that DMS were a reliable source of traffic information.
The evaluation report contained benefits information regarding the implementation of dynamic message signs (DMS) along a freeway corridor. Overall, focus group studies indicated that customers were…
Content type
Date Posted
09/21/2000
Taxonomy (ARC-IT)
Traffic Information Dissemination (TM06),
Integrated Decision Support and Demand Management (TM09)
Geolocation links
In San Antonio, Texas, usage of a traveler information Web site increased at a rate of 19 percent per year and spiked during severe weather events.
Improvements to elements of San Antonio’s traveler information system included improvements to an Internet Web site. The Web site provided freeway traffic information including incident locations,…
Content type
Date Posted
09/21/2000
Taxonomy (ARC-IT)
Personnel Device Maintenance (SU13),
Personalized Traveler Information (TI02),
Trip Planning and Payment (TI04)
Geolocation links
In San Antonio, Texas, 60 percent of drivers of transit vehicles equipped with in-vehicle navigation devices reported that they saved time and felt safer.
Improvements to elements of San Antonio’s traveler information system included the installation of In-Vehicle Navigation (IVN) devices in vehicles operated by public agencies in the San Antonio area…
Content type
Date Posted
09/21/2000
Taxonomy (ARC-IT)
En-Route Guidance (TI03),
Automated Vehicle Operations (VS16),
Emergency Call-Taking and Dispatch (PS01)
Geolocation links
Evaluation indicated that integrating DMS and incident management systems could reduce crashes by 2.8 percent, and that integrating DMS and arterial traffic control systems could decrease crashes by 2 percent, in San Antonio, Texas.
The evaluation report detailed benefits information regarding the implementation of an incident management program with dynamic message signs (DMS) along a freeway corridor and traffic signal timing…
Content type
Date Posted
09/21/2000
Taxonomy (ARC-IT)
Traffic Signal Control (TM03),
Integrated Decision Support and Demand Management (TM09),
Traffic Information Dissemination (TM06),
Vehicle Emergency Response (PS05),
Traffic Incident Management System (TM08)
Geolocation links
In San Antonio, Texas, a freeway management system reduced fuel consumption by an estimated 2,600 gallons per major incident.
FINDINGSReview of video surveillance data collected throughout 1995 indicated an average reduction in response time of 20 percent. This result compared responses to incidents recorded in the months…
Content type
Date Posted
09/21/2000
Taxonomy (ARC-IT)
Traffic Information Dissemination (TM06),
Vehicle Emergency Response (PS05),
Infrastructure-Based Traffic Surveillance (TM01)
Geolocation links
Driver confidence in traveler information improved after implementation of the TransGuide freeway management system in San Antonio, Texas.
FINDINGSSurvey results reported in the paper indicate improvements in driver confidence with the traveler information available to them after the implementation of TransGuide. Periodic surveys taken…
Content type
Date Posted
09/21/2000
Taxonomy (ARC-IT)
Traffic Information Dissemination (TM06),
Vehicle Emergency Response (PS05),
Infrastructure-Based Traffic Surveillance (TM01)
Geolocation links
Following deployment of the TransGuide freeway management system in San Antonio, Texas, crash frequency was reduced by 41 percent and incident response time decreased by 20 percent.
FINDINGSThe first phase of the TransGuide system includes dynamic message signs, lane control signs, loop detectors, video surveillance cameras, and a communication network covering the 26…
Content type
Date Posted
09/21/2000
Taxonomy (ARC-IT)
Traffic Information Dissemination (TM06),
Vehicle Emergency Response (PS05),
Infrastructure-Based Traffic Surveillance (TM01)
Geolocation links
Capital costs to install temporary Variable Speed Limit (VSL) systems in Texas ranged from $91K to $180K.
In 2014, acting on a ruling by the Texas Transportation Commission, TxDOT and Texas A&M Transportation Institute (TTI) a Variable Speed Limit (VSL) pilot program was implemented. The pilot…
Content type
Made Public Date
05/25/2017
Taxonomy (ARC-IT)
Variable Speed Limits (TM20)
Geolocation links
The cost to operate and maintain UDOTs TI Weather Program is about $140,000 per year.
In June 2012 USDOT finalized Version 3.0 of the Best Practices for Road Weather Management report. This report contains 27 case studies of systems in 22 states that improve roadway operations under…
Content type
Made Public Date
04/29/2014
Taxonomy (ARC-IT)
Vehicle-Based Traffic Surveillance (TM02)
Geolocation links
Texas DOT spent $13,000 per location for an upgrade of their pump station monitoring system, to better manage flooding.
In June 2012 USDOT finalized Version 3.0 of the Best Practices for Road Weather Management report. This report contains 27 case studies of systems in 22 states that improve roadway operations under…
Content type
Made Public Date
04/29/2014
Geolocation links
Texas DOT spent $75,000 per location to install high water detection systems to avoid flooding disasters.
In June 2012 USDOT finalized Version 3.0 of the Best Practices for Road Weather Management report. This report contains 27 case studies of systems in 22 states that improve roadway operations under…
Content type
Made Public Date
04/29/2014
Geolocation links
In-vehicle navigation units and real-time traveler information software development were the main cost drivers for the San Antonio TransGuide MMDI project to improve operations at several public agencies.
As part of the San Antonio TransGuide Metropolitan Model Deployment Initiative (MMDI) program, in-vehicle navigation (IVN) units were deployed to enhance traveler information systems and improve…
Content type
Made Public Date
01/29/2004
Geolocation links
From a cross-cutting study of seven highway-rail intersections using ITS, project cost ranged from $200,000 to $9.5 million depending on system design and functionality.
The US DOT ITS Joint Program Office evaluated seven projects that implemented ITS at highway-rail crossings. Among the seven projects five functions were tested:
Second train warning
Four-…
Content type
Made Public Date
12/12/2003
An advanced highway-rail intersection warning system was deployed for just over $350,000 as part of the San Antonio Metropolitan Model Deployment Initiative.
The Advanced Warning for Railroad Delays (AWARD) project was implemented as part of the San Antonio, Texas, Metropolitan Model Deployment Initiative (MMDI). The project consisted of Doppler radar and…
Content type
Made Public Date
12/11/2003
Taxonomy (ARC-IT)
In-Vehicle Signage (TI07),
Standard Railroad Grade Crossing (TM13),
Advanced Railroad Grade Crossing (TM14)
Geolocation links
Over half of the $3.25 million cost for the San Antonio Lifelink advanced telemedicine project was attributed to reseach and development.
The LifeLink project was deployed to provide improved emergency service in the San Antonio, Texas area. LifeLink is an advanced application of telemedicine. The system supports voice and video…
Content type
Made Public Date
11/20/2003
Taxonomy (ARC-IT)
Emergency Call-Taking and Dispatch (PS01)
Geolocation links
The integrated freeway/incident management system covering 28.9 miles in San Antonio was deployed for approximately $26.6 million.
In San Antonio, Texas, an integrated freeway/incident management system was developed as part of a freeway expansion project. The project covered a 28.9-mile stretch of I-10, I-410, and US 281 in the…
Content type
Made Public Date
11/14/2003
Taxonomy (ARC-IT)
Traffic Information Dissemination (TM06),
Integrated Decision Support and Demand Management (TM09),
Emergency Response (PS02),
Incident Scene Pre-Arrival Staging Guidance for Emergency Responders (PS06),
Infrastructure-Based Traffic Surveillance (TM01)
Geolocation links
INTELLIGENT TRANSPORTATION SYSTEMS JOINT PROGRAM OFFICE
1200 New Jersey Avenue, SE
Washington, DC 20590
