TMC PFS Projects
Table of Contents
2. Maintenance Considerations and Activities
3. TMS Maintenance Concept & Requirements
4. Maintenance Considerations for the Life-Cycle
of a TMS
5. TMS Maintenance Program
6. TMC Maintenance Program: Multi-Year Plan
7. Maintenance Program Support Services
- American Association of State Highway and Transportation Officials.
- Adaptive Cruise Control.
- Automated Collision Notification system.
- Automated Highway System. The AHS is a highly advanced system that
will redefine the current vehicle-highway relationship by shifting many
tasks from the vehicle operator to the roadway itself. The first demonstration
of the AHS concept was in San Diego in August 1997.
- Advanced Public Transportation Systems. Collection of technologies
to increase the efficiency of public transportation systems; they offer
users greater access to information on system operations.
- An overarching framework that allows individual ITS services and technologies
to work together, share information, and yield synergistic benefits.
The National ITS Architecture was released as a final document in June
- Advanced Rural Transportation Systems. These are ITS technologies
aimed at addressing the specific needs of rural communities, particularly
the issues of mobility and road safety.
- Advanced Traveler Information Systems. ATIS technologies provide travelers,
businesses, commercial carriers, and transportation professionals with
the information they need to make decisions, from daily individual travel
decisions to larger-scale decisions that affect the entire system, such
as those concerning incident management.
- Advanced Traffic Management Systems. ATMS technologies apply surveillance
and control strategies to improve traffic flow on highways and streets.
- Automatic Vehicle Identification. A system which combines an on-board
tag or transponder with roadside receiver for the automated identification
of vehicles. Used for electronic toll collection, stolen vehicle recovery,
using vehicles as traffic probes, etc.
- Advanced Vehicle Collision and Safety Systems. These systems employ
mostly in-vehicle technologies to help drivers avoid collisions, monitor
driver performance, and automatically signal for emergency aid immediately
- Automatic Vehicle Location system. Computerized system that tracks
the current location of fleet vehicles, to assist dispatching, etc.
- Commercial Vehicle Information Systems and Networks. A network that
connects existing Federal, State, and private-sector information systems
to improve commercial-vehicle movement.
- Commercial Vehicle Operations. ITS program to apply advanced technologies
to commercial-vehicle operations, including commercial-vehicle electronic
clearance; automated roadside safety inspection; electronic purchase
of credentials; automated mileage and fuel reporting and auditing; safety
status monitoring; communication between drivers, dispatchers, and intermodal
transportation providers; and immediate notification of incidents and
descriptions of hazardous materials involved.
- Data Acquisition System for Crash Avoidance Research. A portable,
on-board vehicle data-gathering system that monitors and records vehicle
performance and the driver's physical reactions.
- Differential Global Positioning System. A technique that can be applied
by civilian GPS users to improve GPS accuracy to 1-10 meters.
- Department of Transportation. When used alone, indicates U.S. Department
of Transportation. In conjunction with a place name, indicates State,
city, or county transportation Agency (e.g., Illinois DOT or Los Angeles
- Dedicated Short-Range Communications. Wireless, short-range digital
communications. Uses electronic readers, tags, and software.
- Electronic Data Interchange. A recognized technology format and standard
for moving "packets" of data.
- Early Deployment Plans.
- Emergency Management Services. Services designed to optimize the response
time to incidents.
- Emergency Response Providers Enabling Research. Applied research that
advances existing technologies, enabling them to support ITS applications.
This research has refined technology for eventual field testing, developed
evaluation methods to determine potential benefits and cost effectiveness,
developed human factors guidelines, and established performance specifications
- Program standing for Evaluating New Technologies for Roads Program
Initiative in Safety and Efficiency. International public sector cooperative
initiative to facilitate the rapid development and deployment of ITS
technologies. Participants include Arizona DOT, Colorado DOT, Dutch
Ministry of Transport, FHWA, Iowa DOT, Maricopa County, AZ, Minnesota
DOT, New York DOT, Ontario Ministry of Transportation, Transport Canada,
Virginia DOT, and Washington State DOT.
- Federal Communications Commission.
- Federal Highway Administration, which is part of USDOT.
- Freeway Management Systems. Network systems giving transportation
managers the capability to monitor highway and environmental conditions
on the freeway system, identify recurring and non-recurring flow impediments,
implement appropriate control and management strategies, and provide
collection and dissemination of critical real-time information to travelers.
- Federal Operational Test.
- Federal Railroad Administration, which is part of USDOT.
- Federal Transit Administration, which is part of USDOT.
- Gary-Chicago-Milwaukee corridor. One of the ITS Priority Corridor
projects as defined by ISTEA to receive funding for applying ITS to
assist in reducing extreme or severe ozone. The initial GCM priority
is real-time data acquisition and the sharing of information across
the corridor that is useful to both multi-modal system operators and
- Geographic Information System. Computerized data management system
designed to capture, store, retrieve, analyze, and report on geographic/demographic
- Government Performance and Results Act.
- Global Positioning System. Government-owned system of 24 Earth-orbiting
satellites which transmit data to ground-based receivers and used to
determine the precise position of vehicles on the ground. Provides extremely
accurate latitude/longitude ground position.
- Highway-Rail Intersection. User service that integrates ITS technology
into already existing HRI warning systems to enhance safety effectiveness
and operational efficiency. At railroad grade crossings, HRI technologies
located both in-vehicle and along the roadside ensure that train movements
are coordinated with traffic signals and that drivers are alerted to
- Human Factors
- Research conducted to understand the impact of automated technology
on human decision-making and driving behavior. For instance, studies
are being done to investigate whether the use of cellular phones while
driving distracts drivers to the extent that more accidents occur with
- Intelligent Cruise Control. A crash avoidance technology that automatically
adjusts vehicle cruise speed to maintain safe following distances.
- Incident Management Systems. Monitoring and surveillance systems that
identify the occurrence of incidents in real-time so that they can be
quickly located and removed.
- Seamless integration of multiple travel modes.
- The ability to integrate the operation of diverse networks and systems.
The vision of the intelligent transportation infrastructure is a seamless
interoperable coast-to-coast network that allows drivers and information
to flow through the system without barriers.
- In-Vehicle Navigation Technology
- Allows drivers to access route guidance information while en-route.
Includes location referencing technology, in-vehicle display units,
map information, and audio/text delivery technology.
- Intermodal Surface Transportation Efficiency Act of 1991. Federal
law providing primary Federal funding for highway and other surface
transportation programs in the United States through 1997. ISTEA contains
the Intelligent Vehicle-Highway System Act. Directs the establishment
of a National ITS program and requires inclusion of a strategic plan
for ITS in the United States, implementation and evaluation of ITS technologies,
development of standards protocols, an information clearinghouse, the
use of advisory committees (one of which is ITS America), and funding
for ITS research, development, and testing in such efforts as the corridors
- Intelligent Transportation System(s). The application of advanced
technologies to improve the efficiency and safety of transportation
- ITS America
- Intelligent Transportation Society of America. A nonprofit, public/private
scientific and educational organization that works to advance a national
program for safer, more economical, more energy efficient, and environmentally
sound highway travel in the United States. The USDOT uses ITS America
as a Federal expert advisory resource and panel.
- Intelligent Vehicle-Highway Systems. Now known as "intelligent
- Intelligent Vehicle Initiative.
- Joint Program Office for ITS. This office resides in FHWA.
- An information center for traffic or travel data located in shopping
malls, parking decks, hotels, airports, businesses, transit terminals,
etc. These kiosks are normally outfitted with interactive computer capabilities.
- Local Area Network. A method of connecting several computers together
using either high- or low-bandwidth communication media.
- Location Referencing
- Technology that identifies locations of vehicles, incidents, and travelers.
Used with GPS and AVL technologies. Supports user services such as Mayday,
EMS, CVO, ATMS, ATIS, and AVCSS.
- The act of bringing ITS technology into everyday use by travelers
and transportation professionals.
- An ITS program designed to link travelers in trouble with transportation
officials in real-time. Uses location-referencing technologies and communications
- Model Deployment Initiative. A program designed to develop model sites
demonstrating integrated intelligent transportation infrastructures
and successful jurisdictional and organizational working relationships.
The program is also designed to demonstrate the benefits of integrated
transportation management systems that feature strong regional, multimodal
traveler information services.
- Metropolitan Planning Organization. Regional policy body, designated
by local officials and the governor of the State, that is responsible
in cooperation with the State and other transportation providers for
carrying out the metropolitan transportation planning requirements of
Federal highway and transit legislation.
- National Automated Highway Systems Consortium.
- National Highway Traffic Safety Administration, which is part of USDOT.
- National Transportation Communications for ITS Protocol. Required
for traffic management operations. Allows for wireline communications
between traffic management centers and field equipment.
- Operation Concept Development.
- Operation Timesaver
- Federal initiative aimed at reducing congestion by building an intelligent
transportation infrastructure in 75 of the Nation's largest metropolitan
areas within 10 years. The goal is to reduce travel times by 15 percent
by the year 2005.
- Professional Capacity Building program.
- Priority Corridor
- One of the first ITS programs established by ISTEA. Originally designed
to showcase technology and hardware, it has created communication channels
and organization frameworks among the numerous Agencies that must coordinate
in order to successfully implement ITS.
- "Envelopes" used to package data for interoperable flow
of ITS information. Protocols can include information on addressing,
security, priority, and other handling information.
- Public-Private Partnerships
- Agreements with private-sector companies to participate in the deployment
of ITS through commitment of time, services, products, or capital investment.
These partnerships are the foundation of the ITS strategic plan's financial
strategy for ITS deployment.
- Public Safety Answering Points.
- Research and Development.
- Radio Frequency.
- Request for Proposals.
- Research and Special Programs Administration, which is part of USDOT.
- Real-Time Traffic-Adaptive Control System. Next-generation traffic
signal control management system. An advanced dynamic control strategy
that uses state-of-the-art traffic signal control based on real-time
- The Safety and Fitness Electronic Records System, which is a component
- System for Assessing the Vehicle Motion Environment. A roadside measurement
system to quantify the movement of vehicles in real traffic.
- Standards Development Organization. Standard specifications that are
established to address the need for various technologies, products,
and components from different vendors to work together.
- Traffic management center or transportation management center.
- Traffic Management Data Dictionary. A source of standardized information
that defines how data is exchanged and how it flows between ITS devices
and systems. The TMDD standardizes message sets for national interoperability.
- Transportation Management Systems.
- Transportation Research Board. Part of the National Academy of Sciences,
National Research Council. Serves to stimulate, correlate, and make
known the findings of transportation research.
- Traffic Signal Control Systems. Advanced systems that adjust the
amount of "green" time for each street and coordinate operation
between signals to maximize traffic flow and minimize delay based on
real-time changes in demand.
- User Services
- Services available to users of an ITS-equipped roadway, as set forth
by ITS America. The 31 services are arranged in seven categories as
- Travel and Transportation Management
- Travel Demand Management
- Public Transportation Operations
- Electronic Payment
- Commercial Vehicle Operations
- Emergency Management
- Advanced Vehicle Control and Safety Systems
- Wide Area Network.
- World Wide Web.