Clarksville Regional ITS Architecture

Inventory

Each stakeholder agency, company, or group owns, operates, maintains or plans ITS systems in the region. The Regional ITS Architecture inventory is a list of "elements" that represent all existing and planned ITS systems in a region as well as non–ITS systems that provide information to or get information from the ITS systems.

Element	Description
Archive Data User	Users that request information from the data archive systems.
Blanchfield Army Community Hospital EMS Vehicles	Emergency Medical Services vehicles that serve Fort Campbell.
Christian County Connected Vehicle Roadside Equipment	Field devices that are able to send information to and receive information from adjacent vehicles that are equipped with digital short– range communications (DSRC) or other wireless communications technology.
Christian County Emergency Management	Agency responsible for disaster planning for Christian County and managing the emergency operations center (EOC).
Christian County TOC	Traffic operations center for Christian County. Responsible for the operation of the traffic signal system, closed circuit television (CCTV) cameras, dynamic message signs (DMS), and any other ITS infrastructure deployed by Christian County.
Christian County Traffic Signals	Traffic signal system operated by Christian County.
Cincinnati Area / Northern Kentucky ITS Region	Kentucky assets are now managed by KYTC / TRIMARC, while ODOT manages assets north of the Ohio River.
City of Clarksville CCTV Cameras	Closed circuit television cameras for traffic surveillance and incident management.
City of Clarksville Changeable Speed Limit Signs	City of Clarksville roadway equipment that can change the speed limit depending on roadway and traffic conditions.
City of Clarksville City Engineers Office	City Engineer's Office responsible for the administration of maintenance and construction projects within the City.
City of Clarksville Connected Vehicle Roadside Equipment	Field devices that are able to send information to and receive information from adjacent vehicles that are equipped with digital short– range communications (DSRC) or other wireless communications technology.
City of Clarksville DMS	Dynamic message signs for traffic information dissemination.
City of Clarksville Electric Vehicle Charging Station	Provides access to electric vehicle supply equipment that is used to charge hybrid and all–electric vehicles. This includes public charging stations that support consumers, workplace charging stations, and fleet charging stations.
City of Clarksville Field Sensors	Roadway equipment used to detect vehicle volumes and/or speeds. Includes equipment such as video image vehicle detection systems (VIVDS), remote traffic microwave sensors (RTMS), Bluetooth devices, or traditional loops.
City of Clarksville Fire Dispatch	Emergency dispatch functions for the Fire Department.
City of Clarksville Fire Vehicles	City of Clarksville Fire Department vehicles.
City of Clarksville Flood Detectors	Flood warning systems for the City of Clarksville that detect flood events at low water crossings throughout the city.
City of Clarksville Flood Warning Beacons	Flashing beacons that are activated to warn motorists that water may be on a section of the roadway.
City of Clarksville Gas and Water	Department that provides utility services including gas, water, and sewer for Clarksville, Montgomery County, and several counties in Tennessee and Kentucky.
City of Clarksville On–Street Parking Meters	On–street parking meters that allow for electronic payment and use sensors in the pavement to detect the presence of vehicles.
City of Clarksville Parking Authority	Parking Authority for the City of Clarksville that maintains and operates on–street and surface parking facilities and parking structures.
City of Clarksville Pedestrian Hybrid Beacon	Pedestrian Hybrid Beacons operated by the City of Clarksville
City of Clarksville Police Department	Police department for the City of Clarksville. Non–emergency functions include the collection of crash data and enforcement of speed limits and commercial vehicles.
City of Clarksville Police Vehicles	City of Clarksville Police Department vehicles.
City of Clarksville Portable DMS	Portable dynamic message signs used for traffic information dissemination during maintenance and construction activities, special events, or incidents.
City of Clarksville Programmable School Flashing Beacons	School zone warning system that would be installed in the City of Clarksville school zones to warn drivers and allow for remote activation or deactivation the flashers.
City of Clarksville Rail Notification System	Roadway equipment used to alert motorists that a crossing is currently blocked by a train.
City of Clarksville Reversible Lane Equipment	Lane control signals, dynamic lane control signs, or other devices used in the operation of reversible lanes.
City of Clarksville RWIS Sensors	Road weather information system sensors to monitor weather conditions at the roadway.
City of Clarksville Speed Monitoring Equipment	Equipment used to monitor vehicle speeds for use in targeting locations for police enforcement.
City of Clarksville Street Department	Responsible for providing roadway construction and maintenance, drainage maintenance, and traffic control and engineering.
City of Clarksville Street Department Vehicles	Vehicles used for street construction, street maintenance, and emergency maintenance response.
City of Clarksville TOC	Traffic operations center for the City of Clarksville. Responsible for the operation of the traffic signal system, closed circuit television (CCTV) cameras, dynamic message signs (DMS), and any other ITS infrastructure deployed by the City of Clarksville.
City of Clarksville Traffic Signals	Traffic signal system operated by the City of Clarksville.
City of Clarksville Variable LED Streetlights	Energy efficient streetlights in the City of Clarksville that allow for variable lighting based on traffic, weather, and roadway conditions.
City of Clarksville Website	Website for the City of Clarksville. Includes information on City departments including traffic images.
Commercial Vehicles	Privately owned commercial vehicles traveling within the Region.
CTS Bus Stop DMS	Clarksville Transit System real–time next bus arrival information boards at select bus stops.
CTS Data Archive	Clarksville Transit System data archive for transit data.
CTS Demand Response Dispatch Center	Clarksville Transit System paratransit dispatch center.
CTS Demand Response Vehicles	Clarksville Transit System paratransit vehicles.
CTS Fixed–Route Dispatch Center	Clarksville Transit System fixed–route dispatch center.
CTS Fixed–Route Vehicles	Clarksville Transit System fixed–route vehicles. Includes neighborhood and downtown routes, express buses and any other fixed–route service.
CTS Mobile Phone App	Clarksville Transit System mobile phone application that allows users to view transit service information, real–time bus location, and create a transit trip plan.
CTS Routing Application	Clarksville Transit System online routing application to assist travelers in developing a customized transit plan for an upcoming trip.
CTS Transit Center CCTV Camera Surveillance	Clarksville Transit System closed circuit television camera surveillance at the transit transfer center, on transit vehicles, or at other transit facilities.
CTS Transit Kiosks	Clarksville Transit System kiosks for dissemination of transit traveler information. Kiosks can also be used for the purchase and recharging of electronic fare payment cards.
CTS Website	Clarksville Transit System website. Provides route and fare information.
CUAMPO Data Archive	Data archive for the transportation related data in Clarksville Urbanized Area Metropolitan Planning Organization.
CUAMPO Website	Clarksville Urbanized Area MPO website that displays daily air quality measurements and forecasts and other Regional information.
Driver
Electronic Fare Payment Card	Medium for collection of transit fares electronically obtained on all fixed–route buses.
Emergency Vehicle OBE	The Emergency Vehicle On–Board Equipment (OBE) resides in an emergency vehicle and provides the processing, storage, and communications functions that support public safety–related connected vehicle applications. It represents a range of vehicles including those operated by police, fire, and emergency medical services. In addition, it represents other incident response vehicles including towing and recovery vehicles and freeway service patrols. It includes two–way communications to support coordinated response to emergencies.
Financial Service Provider	Handles exchange of money for transit electronic payment collection.
Fort Campbell CCTV Cameras	Closed circuit television cameras for traffic surveillance, incident management and security.
Fort Campbell Directorate of Emergency Services	Provide emergency and non–emergency services for Fort Campbell inlcuding fire, police, 911 dispatch, and gate security.
Fort Campbell Entry Gate Closure Barriers	Equipment that is used to secure the gates on Fort Campbell and control ingress and egress of vehicles.
Fort Campbell Field Sensors	Roadway equipment used to detect vehicle volumes and/or speeds. Includes equipment such as video image vehicle detection systems (VIVDS), remote traffic microwave sensors (RTMS), or traditional loops.
Fort Campbell Public Affairs Office	Fort Campbell office responsible for the dissemination of traffic information to the media and the public.
Fort Campbell Public Safety Vehicles	Fire and Military Police vehicles on Fort Campbell.
Fort Campbell Rail Notification System	Roadway equipment used to alert motorists that a crossing is currently blocked by a train.
Fort Campbell TOC	Traffic operations center Fort Campbell. Responsible for the operation of the traffic signal system, closed circuit television (CCTV) cameras, and any other ITS infrastructure deployed within Fort Campbell.
Fort Campbell Traffic Signals	Traffic signal system operated by Fort Campbell.
Fort Campbell Website	Website for Fort Campbell. Includes information on various departments and in the future it is envisioned that the website will have real–time information about roadway conditions.
GoKY.ky.gov	GoKY.ky.gov is a statewide traffic, construction and weather condition information system.
Hopkinsville–Christian County Emergency Communications Center	911 Public Safety Answering Point (PSAP) responsible for answering all 911 calls made within Christian County and dispatching emergency responders.
Kentucky SAFE Patrol Dispatch	Kentucky Safety Assistance for Freeway Emergencies (SAFE) dispatch for roadway service patrols.
Kentucky SAFE Patrol Vehicles	KYTC roadway service patrol vehicles that serve all interstates and parkways in the state in addition to US 23 and KY 80.
KSP Commercial Vehicle Enforcement	KSP Commercial Vehicle Enforcement
KSP Commercial Vehicle Enforcement Truck Weigh and Inspection Stations	KSP Commercial Vehicle Enforcement Truck Weigh and Inspection Stations
KSP Post 2 Dispatch	Kentucky State Police Post 2 dispatch that includes Christian County.
KSP Vehicles	Kentucky State Police vehicles.
KSP Weigh–in–Motion	KSP Weigh–in–Motion
KYEEC Air Quality Sensors	Kentucky Energy and Environment Cabinet air quality sensors that monitor ozone and particulate matter levels.
KYEEC Division for Air Quality	Kentucky Energy and Environment Cabinet responsible for maintaining air quality monitoring stations.
KYEM	Kentucky Emergency Management. Responsible for managing emergency operations during a disaster or large scale incident.
KYTC CCTV Cameras	KYTC closed circuit television cameras for traffic surveillance and incident management.
KYTC Connected Vehicle Roadside Equipment	Field devices that are able to send information to and receive information from adjacent vehicles that are equipped with digital short– range communications (DSRC) or other wireless communications technology.
KYTC DataMart	KYTC data archive for the Kentucky Transportation Cabinet.
KYTC District 2 Engineers Office	KYTC Office responsible for administration of maintenance and construction projects within the District as well as communicating work zone information to the public through the Public Information Office.
KYTC District 2 Maintenance and Construction	KYTC entity responsible for the oversight of construction and maintenance in District 2.
KYTC District 2 TMC	KYTC District 2 Transportation Management Center (TMC) located in Madisonville. Operate and maintain traffic signals on state routes and CCTV cameras.
KYTC DMS	KYTC dynamic message signs used for traffic information dissemination.
KYTC Emergency Services Coordinator	KYTC coordinator responsible for managing the KYTC response in a large scale incident or disaster in which the Kentucky Emergency Management (KYEM) division activates the state emergency operations center (EOC).
KYTC Field Sensors	KYTC roadway equipment used to detect vehicle volumes and/or speeds. Includes equipment such as VIVDS, RTMS, or traditional loops.
KYTC Lane Control DMS	Dynamic message sign with the ability to display full–color traffic information messages and dynamic lane management.
KYTC Maintenance Vehicles	KYTC vehicles used in maintenance operations.
KYTC Public Affairs Office	KYTC Office responsible for the dissemination of traffic information to the media and the public.
KYTC Ramp Queue Detection System	Vehicle detection system that monitors queues at exit ramps and can either warn drivers approaching the queue through DMS or warning beacons or the system can interact with the traffic signal system to clear the queue.
KYTC RWIS Sensors	KYTC road weather information system sensors to monitor weather conditions at the roadway.
KYTC Smart Work Zone Equipment	KYTC portable ITS equipment that can be used in work zones to more efficiently manage traffic and provide traveler information. Includes portable closed circuit television (CCTV) cameras, vehicle detection, and dynamic message signs (DMS).
KYTC Speed Monitoring Equipment	Equipment used to monitor vehicle speeds for use in targeting locations for police enforcement.
KYTC Statewide IMOC	KYTC Incident Management Operations Center (IMOC) in Frankfort that serves as the statewide traffic management center. The IMOC has communication with all DMS in the region.
KYTC Traffic Signals	KYTC traffic signal system operated on state highways.
Local Print and Broadcast Media	Local media that provide traffic or incident information to the public.
Louisville (TRIMARC) TMC	Traffic management center operated by KYTC that covers the Louisville metro area and Northern KY regional ITS assets in District 6.
Maint and Constr Vehicle OBE	The 'Maint and Constr Vehicle OBE' resides in a maintenance, construction, or other specialized service vehicle or equipment and provides the processing, storage, and communications functions necessary to support highway maintenance and construction. All types of maintenance and construction vehicles are covered, including heavy equipment and supervisory vehicles. The MCV OBE provides two–way communications between drivers/operators and dispatchers and maintains and communicates current location and status information. A wide range of operational status is monitored, measured, and made available, depending on the specific type of vehicle or equipment. A snow plow for example, would monitor whether the plow is up or down and material usage information. The Maint and Constr Vehicle OBE may also contain capabilities to monitor vehicle systems to support maintenance of the vehicle itself and include sensors that monitor environmental conditions such as road condition and surface weather information. This can include a diverse set of mobile environmental sensing platforms, including wheeled vehicles and any other vehicle that collects and reports environmental information.
MCHRA Data Archive	Mid–Cumberland Human Resource Agency data archive for transit data.
MCHRA Public Transit Demand Response Vehicles	Mid–Cumberland Human Resource Agency demand response vehicle fleet.
MCHRA Public Transit Dispatch Center	Mid–Cumberland Human Resource Agency dispatch center responsible for the tracking, scheduling and dispatching of MCHRA demand response services. MCHRA operates in Cheatham, Davidson, Dickson, Houston, Humphreys, Montgomery, Robertson, Rutherford, Stewart, Sumner, Trousdale, Williamson, and Wilson Counties.
MCHRA Public Transit IVR System	Mid–Cumberland Human Resource Agency Interactive Voice Response. This is a customer interface component that calls transit riders and reminds them of their transit trip and provides approximate next–stop arrival times of the transit vehicle.
MCHRA Public Transit Passes	Mid–Cumberland Human Resource Agency passes for MCHRA public transit that can be purchased on the MCHRA Public Transit website.
MCHRA Public Transit Website	Mid–Cumberland Human Resource Agency website with information about fares and schedules.
Montgomery County Connected Vehicle Roadside Equipment	Field devices that are able to send information to and receive information from adjacent vehicles that are equipped with digital short– range communications (DSRC) or other wireless communications technology.
Montgomery County E–911 Center Dispatch	911 Public Safety Answering Point (PSAP) responsible for answering all 911 calls made within the county and dispatching emergency responders.
Montgomery County EMA	Montgomery County Emergency Management Agency. Responsible for disaster planning for the County and operating the emergency operations center (EOC).
Montgomery County EMS Vehicles	Montgomery County Emergency Medical Services.
Montgomery County Sheriff Vehicles	Montgomery County Sheriff's Office vehicles.
Montgomery County Sheriffs Office	Law enforcement agency for Montgomery County. The emergency dispatch functions for the Sheriff's Office are included in the Montgomery County E–911 Center. Non–emergency functions include the collection of crash data.
Montgomery County TOC	Traffic operations center for Montgomery County. Responsible for the operation of the traffic signal system, closed circuit television (CCTV) cameras, dynamic message signs (DMS), and any other ITS infrastructure deployed by Montgomery County.
Montgomery County Traffic Signals	Traffic signal system operated by Montgomery County.
Municipal CCTV Cameras	Municipal closed circuit television cameras for traffic surveillance and incident management.
Municipal Connected Vehicle Roadside Equipment	Field devices that are able to send information to and receive information from adjacent vehicles that are equipped with digital short– range communications (DSRC) or other wireless communications technology.
Municipal Field Sensors	Municipal roadway equipment used to detect vehicle volumes and/or speeds. Includes equipment such as video image vehicle detection systems (VIVDS), remote traffic microwave sensors (RTMS), or traditional loops.
Municipal Police Department	Municipal police departments within the Region responsible for law enforcement. The emergency dispatch functions for the police departments are included in the Montgomery County E–911 Center or the Hopkinsville–Christian County Emergency Communications Center. Non–emergency functions include the collection of crash data.
Municipal Rail Notification System	Municipal roadway equipment used to alert motorists that a crossing is currently blocked by a train.
Municipal Speed Monitoring Equipment	Equipment used to monitor vehicle speeds for use in targeting locations for police enforcement.
Municipal TOC	Municipal traffic operations centers responsible for the operation of municipal signal systems and any other municipal ITS infrastructure.
Municipal Traffic Signals	Municipal traffic signal systems within the Clarksville Region.
Municipal/County Engineers Office	Municipal or County Offices responsible for the administration of maintenance and construction projects within the municipality or county.
Municipal/County Maintenance	Municipal or County Department that oversees the maintenance of streets, sidewalks, and roadway right–of–way.
Municipal/County Maintenance Vehicles	Municipal or County vehicles used by Municipal/County maintenance departments in maintenance and construction activities.
Municipal/County Portable DMS	Municipal or County portable dynamic message signs used for traffic information dissemination during maintenance and construction activities, special events, or incidents.
Municipal/County Public Safety Vehicles	Municipal or County law enforcement, fire, and EMS vehicles.
Municipal/County RWIS Sensors	Municipal or County road weather information system sensors to monitor weather conditions at the roadway.
Municipal/County Website	Municipal or county website that includes information on agency departments. In the future it is envisioned that the website would have real–time information about roadway conditions.
National Weather Service	Provides official US weather, marine, fire, and aviation forecasts, warnings, meteorological products, climate forecasts, and information about meteorology.
Other KYTC District Maintenance and Construction	Other KYTC District Maintenance and Construction Offices.
Other KYTC District TMCs	KYTC traffic management centers in adjacent districts with which information is shared for coordination in an emergency situation or for regional traffic management.
Other Maintenance and Construction Management Agencies	Additional maintenance and construction operations agencies with which information is shared for coordination in an emergency situation.
Other Public/Private Vehicle OBE
Other TDOT Region District Operations	Other TDOT regional maintenance offices.
Other Traffic Management Agencies	Additional traffic management agencies with which information is shared for coordination in an emergency situation.
PACS Data Archive	Data archive for Pennyrile Allied Community Services data.
PACS Transportation Demand Response Vehicles	Vehicles used by Pennyrile Allied Community Services to provide demand response transit service in Christian County. The fleet includes vehicles equipped with wheelchair lifts and lowered floor wheelchair vans.
PACS Transportation Dispatch Center	Dispatch center for Pennyrile Allied Community Services vehicles.
PACS Transportation Website	Pennyrile Allied Community Services website that contains information about fares and schedules.
Pedestrian	Users of the transportation system
Personal Computing Devices	Computing devices that travelers use to access public information.
Private Fleet Management Systems	Fleet and freight management for private carriers.
Private Sector Traveler Information Services	Traveler information service operated by a private entity.
Public/Private Vehicle OBE
Public/Private Vehicles	Public or private vehicles that traverse the region.
Rail Freight	Rail cars traveling within the Region.
Rail Operator Wayside Equipment	Equipment located along the tracks including railroad crossing gates, bells, and lights as well as the interface to the traffic signal controller indicating the presence of a train.
Social Networking Services	Subscription based services operated by private providers that provide an option for real–time traveler information dissemination. Examples of such services include Facebook or Twitter.
TDEC Air Quality Sensors	Air quality sensors that monitor ozone and particulate matter levels.
TDEC Division of Air Pollution Control	Tennessee Department of Environment and Conservation division responsible for establishing emission standards and procedures for industries and maintaining air quality monitoring stations.
TDOT CCTV Cameras	Closed circuit television cameras for traffic surveillance and incident management.
TDOT Changeable Speed Limit Signs	TDOT roadway equipment that can change the speed limit depending on roadway and traffic conditions.
TDOT Community Relations Division	TDOT Division responsible for the dissemination of traffic information to the media and the public.
TDOT Connected Vehicle Roadside Equipment	Field devices that are able to send information to and receive information from adjacent vehicles that are equipped with digital short– range communications (DSRC) or other wireless communications technology.
TDOT DMS	TDOT dynamic message signs for traffic information dissemination.
TDOT Emergency Services Coordinator	TDOT coordinator responsible for managing the TDOT response in a large scale incident or disaster in which the Tennessee Emergency Management Agency (TEMA) activates the state emergency operations center (EOC).
TDOT Field Sensors	TDOT roadway equipment used to detect vehicle volumes and/or speeds. Includes equipment such as video image vehicle detection systems (VIVDS), remote traffic microwave sensors (RTMS), or traditional loops.
TDOT HELP Vehicles	TDOT roadway service patrol vehicles. Currently operate in and are dispatched elsewhere in the Region for large incidents.
TDOT Lane Control DMS	Dynamic message sign with the ability to display full–color traffic information messages and dynamic lane management.
TDOT Long Range Planning Division Archive	Data archive for the Long Range Division. The Division is responsible for traffic data collection and analysis.
TDOT Maintenance Headquarters	TDOT maintenance headquarters.
TDOT Maintenance Vehicles	TDOT vehicles used in maintenance operations.
TDOT Ramp Metering Equipment	TDOT roadway equipment used in the operation of a ramp metering system. Includes the signals and any other ITS equipment.
TDOT Ramp Queue Detection System	Vehicle detection system that monitors queues at exit ramps and can either warn drivers approaching the queue through DMS or warning beacons or the system can interact with the traffic signal system to clear the queue.
TDOT Region 1 TMC – Knoxville	TDOT Transportation management center for Region 1, located in Knoxville. Responsible for the operation of the ITS equipment located in Region 1. This includes the freeway management system in Knoxville as well as rural ITS deployments.
TDOT Region 2 TMC – Chattanooga	TDOT transportation management center for Region 2, located in Chattanooga. Responsible for the operation of the ITS equipment located in Region 2. This includes the freeway management system in Chattanooga as well as rural ITS deployments.
TDOT Region 3 District Operations	TDOT office that manages roadway maintenance and construction projects and responds to incidents when services are requested by local emergency management in Region 3.
TDOT Region 3 Engineers Office	TDOT Office is responsible for administration of maintenance and construction projects within the Region as well as communicating work zone information to the public through the Public Information Office.
TDOT Region 3 HELP Dispatch	TDOT roadway service patrol dispatch. Currently service is limited to the Nashville area except in the case of a large scale incident.
TDOT Region 3 TMC – Nashville	TDOT transportation management center for Region 3, located in Nashville. Responsible for the operation of the ITS equipment located in Region 3. This includes the freeway management system in Nashville as well as rural ITS deployments.
TDOT Region 4 TMC – Memphis	TDOT transportation management center for Region 4, located in Memphis. Responsible for the operation of the ITS equipment located in Region 4. This includes the freeway management system in Memphis as well as rural ITS deployments.
TDOT RWIS Sensors	TDOT road weather information system sensors to monitor weather conditions at the roadway.
TDOT Smart Work Zone Equipment	TDOT portable ITS equipment that can be used in work zones to more efficiently manage traffic and provide traveler information. Includes portable closed circuit television (CCTV) cameras, vehicle detection, and dynamic message signs (DMS).
TDOT SmartWay Mobile App	Mobile phone application that allows users to view traffic images, receive incident information, and monitor traffic speeds.
TDOT SmartWay Website	TDOT SmartWay website providing road network conditions including incident and construction information and camera views. Much of the data for the website comes from SWIFT.
TDOT Speed Monitoring Equipment	Equipment used to monitor vehicle speeds for use in targeting locations for police enforcement.
TDOT Statewide Information for Travelers (SWIFT)	SWIFT is a statewide roadway conditions database. Currently information can be entered by District and Regional maintenance personnel as well as staff at any of the traffic management centers (TMCs) and the Tennessee Highway Patrol (THP). SWIFT feeds the Statewide 511 system and SmartWay website.
TDOT Traffic Signals	Traffic signal system operated by TDOT.
TDOT Wrong–Way Detection and Warning Equipment	Electronic warning signs, field sensors, or other devices used in the operation of wrong–way vehicle detection and warning.
TEMA	Tennessee Emergency Management Agency responsible for managing emergency operations during a disaster or large scale incident.
Tennessee 511 IVR	Tennessee 511 Interactive Voice Response. TDOT contracts the IVR operation to a vendor. The IVR accepts callers' requests and provides responses to specific traveler information needs. This is the customer interface component of the 511 phone system.
Tennessee 511 System	Tennessee 511 traveler information system central server.
Tennessee Bureau of Investigation	Agency responsible for issuing statewide America's Missing: Broadcast Emergency Response (AMBER) Alerts in Tennessee.
THP Commercial Vehicle Enforcement	THP division responsible for commercial vehicle operations inspection and enforcement.
THP Dispatch	Tennessee Highway Patrol dispatch center. There are several THP dispatch centers around the state of Tennessee.
THP Vehicles	Tennessee Highway Patrol vehicles.
THP Weigh–in–Motion	THP facilities with the capability to weigh commercial vehicles while they are traveling at highway speeds.
TITAN Database	Tennessee Integrated Traffic Analysis Network database. The Tennessee Department of Safety crash record database maintained by THP for the collection of crash record information. TITAN interfaces with the TraCS (Traffic and Criminal Software) system.
TN Trips	TN trips is a software that allows TDOT to give permission for oversized or overweight trailers to enter Tennessee and receive a safe passage route.
Transit Operations Personnel	Transit personnel responsible for fleet management, maintenance, and operations of the transit system.
Transit Vehicle OBE	The Transit Vehicle On–Board Equipment (OBE) resides in a transit vehicle and provides the sensory, processing, storage, and communications functions necessary to support safe and efficient movement of passengers. The types of transit vehicles containing this physical object include buses, paratransit vehicles, light rail vehicles, other vehicles designed to carry passengers, and supervisory vehicles. It collects ridership levels and supports electronic fare collection. It supports a traffic signal prioritization function that communicates with the roadside physical object to improve on–schedule performance. Automated vehicle location enhances the information available to the transit operator enabling more efficient operations. On–board sensors support transit vehicle maintenance. The physical object supports on–board security and safety monitoring. This monitoring includes transit user or vehicle operator activated alarms (silent or audible), as well as surveillance and sensor equipment. The surveillance equipment includes video (e.g. CCTV cameras), audio systems and/or event recorder systems. It also furnishes travelers with real–time travel information, continuously updated schedules, transfer options, routes, and fares.
Traveler	Users of the transportation system.