NOACA Regional ITS Architecture

GCRTA Clifton Corridor

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Description

Similar design to Euclid Corridor for corridor along Clifton Boulevard.

Status

Planned

Timeframe

Medium-Term Priority

Geographic Scope

Clifton Boulevard

Service Scope

Stakeholders

Greater Cleveland Regional Transit Authority (RTA)

Inventory

City of Cleveland Signal Control System

City of Cleveland Traffic Signals

GCRTA Communications Center

RTA Fixed Route Vehicles

RTA Kiosks

Services

APTS08-1 - Transit Traveler Information - GCRTA

APTS09-1 - Transit Signal Priority - GCRTA (1 of 2)

Functional Areas

Collect Traffic Surveillance

• The center shall distribute road network conditions data (raw or processed) based on collected and analyzed traffic sensor and surveillance data to other centers.
• The center shall maintain a database of surveillance and sensors and the freeways, surface street and rural roadways, e.g. where they are located, to which part(s) of the network their data applies, the type of data, and the ownership of each link (that i
• The center shall monitor, analyze, and distribute traffic images from CCTV systems under remote control of the center.
• The center shall monitor, analyze, and store traffic sensor data (speed, volume, occupancy) collected from field elements under remote control of the center.

On-board Schedule Management

• The transit vehicle shall calculate the estimated times of arrival (ETA) at transit stops.
• The transit vehicle shall determine scenarios to correct the schedule deviation.
• The transit vehicle shall notify the transit center of vehicle location and operational status as the vehicle exits and returns to the transit facility to support future vehicle assignments.
• The transit vehicle shall provide the schedule deviations and instructions for schedule corrections to the transit vehicle operator if the deviation is small, or the transit vehicle is operating in an urban area.
• The transit vehicle shall receive a vehicle assignment including transit route information, transit service instructions, traffic information, road conditions, and other information for the operator.
• The transit vehicle shall send the schedule deviation and estimated arrival time information to the center.
• The transit vehicle shall use the route information and its current location to determine the deviation from the predetermined schedule.

On-board Transit Information Services

• The transit vehicle shall broadcast advisories about the imminent arrival of the transit vehicle at the next stop via an on-board automated annunciation system.
• The transit vehicle shall enable traffic and travel advisory information to be requested and output to the traveler. Such information may include transit routes, schedules, transfer options, fares, real-time schedule adherence, current incidents, weather
• The transit vehicle shall support input and output forms that are suitable for travelers with physical disabilities.
• The transit vehicle shall tailor the output of the request traveler information based on the current location of the transit vehicle.

On-board Transit Signal Priority

• The transit vehicle shall determine the schedule deviation and estimated times of arrival (ETA) at transit stops.
• The transit vehicle shall prevent a priority request from being sent when the transit vehicle cannot use the priority (e.g., when the transit vehicle makes a passenger stop on the approach to an intersection).
• The transit vehicle shall send priority requests to traffic signal controllers at intersections, pedestrian crossings, and multimodal crossings on the roads (surface streets) and freeway (ramp controls) network that enable a transit vehicle schedule devia
• The transit vehicle shall send the schedule deviation data and status of priority requests to the transit vehicle operator and provide the capability for the transit vehicle operator to control the priority system.

On-board Transit Trip Monitoring

• The transit vehicle shall record transit trip monitoring data including operational status information such as doors open/closed, running times, etc.
• The transit vehicle shall record transit trip monitoring data including vehicle mileage and fuel usage.
• The transit vehicle shall send the transit vehicle trip monitoring data to center-based trip monitoring functions.
• The transit vehicle shall support the computation of the location of a transit vehicle using on-board sensors to augment the location determination function. This may include proximity to the transit stops or other known reference points as well as recor
• The transit vehicle shall track the current location of the transit vehicle.

Remote Transit Information Services

• The public interface for travelers shall collect and present to the transit traveler information on transit routes, schedules, and real-time schedule adherence.
• The public interface for travelers shall collect and provide real-time travel-related information at transit stops, multi-modal transfer points, and other public transportation areas.
• The public interface for travelers shall present information to the traveler in a form suitable for travelers with physical disabilities.
• The public interface for travelers shall provide support for general annunciation and/or display of imminent arrival information and other information of general interest to transit users.

Roadway Signal Priority

• The field element shall notify controlling traffic management center and maintenance center that the signal timing has changed based on a signal preemption/priority request to help those centers determine whether a fault detected at the signal is a true m
• The field element shall respond to requests for indicator (e.g., signal) priority requests from transit vehicles at intersections, pedestrian crossings, and multimodal crossings.

TMC Multimodal Coordination

• The center shall exchange information with transit management centers including details current transit routes, the level of service on each route, and the progress of individual vehicles along their routes.
• The center shall respond to requests from transit management centers for signal priority at one or more intersections along a particular transit route.

TMC Signal Control

• The center shall accept notifications of right-of-way requests from pedestrians.
• The center shall collect traffic signal controller fault data from the field.
• The center shall collect traffic signal controller operational status and compare against the control information sent by the center.
• The center shall implement control plans to coordinate signalized intersections, under control of center personnel, based on data from sensors and surveillance monitoring traffic conditions, incidents, emergency vehicle preemptions, the passage of commerc
• The center shall remotely control traffic signal controllers.

Traffic Maintenance

• The center shall collect and store sensor (traffic, pedestrian, multimodal crossing) fault data and send to the maintenance center for repair.
• The center shall collect and store sensor (traffic, pedestrian, multimodal crossing) operational status.
• The center shall exchange data with maintenance centers concerning the reporting of faulty equipment and the schedule/status of their repair. Information exchanged includes details of new equipment faults, and clearances when the faults are cleared.
• The center shall support an interface with a map update provider, or other appropriate data sources, through which updates of digitized map data can be obtained and used as a background for traffic maintenance data.

Transit Center Fixed-Route Operations

• The center shall dispatch fixed route or flexible route transit vehicles
• The center shall manage large deviations of individual transit vehicles, deviations in rural areas, and deviations of large numbers of vehicles.
• The center shall provide instructions or corrective actions to the transit vehicle operators based upon operational needs.

Transit Center Information Services

• The center shall exchange transit schedules, real-time arrival information, fare schedules, and general transit service information with other transit organizations to support transit traveler information systems.
• The center shall provide transit information to the media including details of deviations from schedule of regular transit services.
• The center shall provide transit service information to traveler information service providers including routes, schedules, schedule adherence, and fare information as well as transit service information during evacuation.
• The center shall provide travelers using public transportation with traffic and advisory information upon request. Such information may include transit routes, schedules, transfer options, fares, real-time schedule adherence, current incidents, weather c

Transit Center Signal Priority

• The center shall analyze transit vehicle schedule performance to determine the need for priority along certain routes or at certain intersections.
• The center shall define business rules that govern use of transit vehicle signal priority, communicate these rules to the transit vehicle, and monitor transit vehicle requests for priority at signalized intersections.
• The center shall provide transit operations personnel with the capability to control and monitor transit signal priority operations.
• The center shall send requests for priority along routes or at intersections to traffic management.

Transit Center Vehicle Tracking

• The center shall determine adherence of transit vehicles to their assigned schedule.
• The center shall monitor the locations of all transit vehicles within its network.
• The center shall provide collected transit probe data to traffic management centers and traveler information service providers for use in measuring current traffic conditions.
• The center shall provide transit operational data to traveler information service providers.
• The center shall support an interface with a map update provider, or other appropriate data sources, through which updates of digitized map data can be obtained and used as a background for transit tracking and dispatch.

Interfaces

Source	Architecture Flows	Destination
City of Cleveland Signal Control System	signal control data	City of Cleveland Traffic Signals
City of Cleveland Signal Control System	traffic control priority status	GCRTA Communications Center
City of Cleveland Traffic Signals	request for right-of-way	City of Cleveland Signal Control System
City of Cleveland Traffic Signals	signal control status	City of Cleveland Signal Control System
GCRTA Communications Center	traffic control priority request	City of Cleveland Signal Control System
GCRTA Communications Center	transit vehicle operator information	RTA Fixed Route Vehicles
GCRTA Communications Center	transit schedule information	RTA Fixed Route Vehicles
GCRTA Communications Center	transit traveler information	RTA Fixed Route Vehicles
GCRTA Communications Center	transit traveler information	RTA Kiosks
RTA Fixed Route Vehicles	local signal priority request	City of Cleveland Traffic Signals
RTA Fixed Route Vehicles	transit vehicle location data	GCRTA Communications Center
RTA Fixed Route Vehicles	transit vehicle schedule performance	GCRTA Communications Center
RTA Fixed Route Vehicles	transit vehicle loading data	GCRTA Communications Center
RTA Kiosks	transit information user request	GCRTA Communications Center

Standards

SDO	Document ID	Title	Type
AASHTO/ITE/NEMA	View List	NTCIP Center-to-Center Standards Group	Group
AASHTO/ITE/NEMA	View List	NTCIP Center-to-Field Standards Group	Group
ASTM	View List	Dedicated Short Range Communication at 915 MHz Standards Group	Group
ASTM/IEEE/SAE	View List	Dedicated Short Range Communication at 5.9 GHz Standards Group	Group
SAE	View List	Advanced Traveler Information Systems (ATIS) General Use Standards Group	Group
AASHTO/ITE/NEMA	NTCIP 1201	Global Object Definitions	Message/Data
AASHTO/ITE/NEMA	NTCIP 1202	Object Definitions for Actuated Traffic Signal Controller (ASC) Units	Message/Data
AASHTO/ITE/NEMA	NTCIP 1210	Field Management Stations (FMS) - Part 1: Object Definitions for Signal System Masters	Message/Data
AASHTO/ITE/NEMA	NTCIP 1211	Object Definitions for Signal Control and Prioritization (SCP)	Message/Data
APTA	APTA TCIP-S-001 3.0.0	Standard for Transit Communications Interface Profiles	Message/Data

Operational Concepts

Stakeholder	Roles and Responsibilities
Greater Cleveland Regional Transit Authority (RTA)
	Collect vehicle probe information (e.g., highway travel times) from transit vehicles and provide to traffic operations centers.
	Coordinate transit schedules with other local transit agencies, particularly for transit connections at transit transfer points.
	Coordinate transit security incidents with local police and the county sheriff.
	Coordinate with the local traffic operations centers for traffic signal priority.
	Coordinate with the local traffic operations centers for traffic signal priority.
	Monitor transit facilities for safety and security purposes using video surveillance and through transit user activated alarms.
	Monitor transit facilities for safety and security purposes using video surveillance and through transit user activated alarms.
	Provide automated dispatch and scheduling for the fixed-route system. Provide operator instructions and receive schedule performance information from transit vehicles while in service.
	Provide transit information to traffic operations centers.
	Provide transit traveler information on the agency's traveler information systems and private sector traveler information services, as well as making it available on all vehicles.
	Provide transit traveler information on the agency's traveler information systems and private sector traveler information services, as well as making it available on all vehicles.
	Track and evaluate schedule performance on all fixed-route transit vehicles.
	Track and evaluate schedule performance on all fixed-route transit vehicles.
	Track the location of transit vehicles.
	Track the location of transit vehicles.