atlas Pitu Mirchandani Professor and Director, ATLAS Research Center Systems and Industrial Engineering Department The University of Arizona, Tucson, Arizona September, 2002 TRANSPORTATION + ITS + REMOTE SENSING
atlas Transportation systems with ITS and Remote Sensing Transportation systems with ITS, especially sensor and communication technologies Provide a framework to discuss transportation systems Transportation service systems before ITS OVERVIEW OF TALK We will discuss:
atlas TRANSPORTATION PLANNING (before ITS) MANUAL SURVEYS & TRAFFIC COUNTS Transport Planning & Network Design MANUAL SURVEYS & TRAFFIC COUNTS Transport Planning & Network design TRANSPORTATION PLANNING
atlas DOWNLOAD OF TIMING PLANS OPTIMIZATION/SIMULATION MODELS TRANSPORTATION MANAGEMENT (before ITS)
atlas MANUAL SURVEYS & TRAFFIC COUNTS Transport Planning & Network design TRANSPORTATION PLANNING DOWNLOAD OF TIMING PLANS OPTIMIZATION/SIMULATION MODELS TRANSPORTATION MANAGEMENT BEFORE ITS
atlas MAP AN INCIDENT AT I6TH & CONN.AVE TRAVELER INFORMATION (before ITS)
atlas MANUAL SURVEYS & TRAFFIC COUNTS Transport Planning & Network design DOWNLOAD OF TIMING PLANS OPTIMIZATION/SIMULATION MODELS MAP AN INCIDENT AT I6TH & CONN.AVE TRAVELER INFORMATION BEFORE ITS
atlas FRAMEWORK FOR ITS Decision System Sensor media Transportation Flows Data Gathering data flow Feedback & decisions EquipmentProcessing Sensors
atlas SENSORS in TRANSPORTATION INDUCTIVE LOOP DETECTORS GPS-BASED LOCATOR OTHER DETECTORS VIDEO DETECTORS SONAR DETECTORS RADAR DETECTORS CELL PHONES OTHER SENSORS TRAVEL PROBES DRIVER INPUTS ROADSIDE BEACONS MANUAL SURVEYS & COUNTS
atlas Transportation Systems Sensor media Transportation Flows Sensors Data flow Feedback & Actions FRAMEWORK FOR ITS
atlas Transportation Systems Sensor media Transportation Flows Sensors Data flow Wire Telephone line Fiber Wireless (analog) Wireless (digital) Internet Wireless Internet FRAMEWORK FOR ITS
atlas Transportation Systems Sensor media Transportation Flows Sensors data flow Feedback & Actions FRAMEWORK FOR ITS
atlas Transportation Systems Sensor media Transportation Flows Sensors data flow Transportation Networks FRAMEWORK FOR ITS
atlas TRANSPORTATION PLANNING WITH ITS MANUAL SURVEYS Transport Planning & Network Design Decisions Sensor data PLANNING & SIMULATION TOOLS (E.G., DTA)
atlas Transportation Systems Sensor media Transportation Flows Sensors data flow Transportation Networks Traffic Signals Traffic Adaptive Signals ** FRAMEWORK FOR ITS
atlas TRAFFIC MANAGEMENT WITH ITS “RHODES” Adaptive Traffic Control ON-LINE OPTIMIZATION/SIMULATION MODELS AUTOMATIC UPLOADING OF SENSOR DATA AUTOMATIC DOWNLOADING OF PHASE TIMES
atlas Transportation Networks Traffic Signals Traffic Adaptive Signals ** Transportation Systems Sensor media Transportation Flows Sensors data flow Adaptive Ramp Meters * Variable Message Signs * Transit Information (WWW)* Congestion Information (WWW) * Highway Advisory Radio ** FRAMEWORK FOR ITS
atlas TRAVELER INFORMATION WITH ITS A TRAFFIC/SYSTEMS ENGINEER MONITORING TRAFFIC CONDITIONS Sensor data A COMMUTER CHECKING TRAFFIC CONDITIONS BEFORE LEAVING WWW GPS-BASED LOCATOR CELL PHONE EN-ROUTE WIRELESS INFORMATION
atlas Transportation Systems Sensor media Transportation Flows Sensors data flow Transportation Networks Traffic Signals Traffic Adaptive Signals ** Adaptive Ramp Meters * Variable Massage Signs * Highway Advisory Radio ** Congestion Information (WWW) * Transit Information (WWW)* Signal Preemption/Priority (Buses, EMUs, trains) * Speed Advisory Signs * In-vehicle Route Guidance Congestion Pricing CVO Fleet Operations/Tracking * FRAMEWORK FOR ITS
atlas Transportation Systems Sensor media Transportation Flows Sensors data flow Feedback & Actions FRAMEWORK FOR ITS + REMOTE SENSING
atlas Transportation Systems Transportation Flows Remote Sensors data flow Feedback & Actions Remote Sensor media Image acquisition Image processing Pattern recognition FRAMEWORK FOR ITS + REMOTE SENSING
atlas REMOTE SENSORS MAGNETIC LOOP DETECTORS MANUAL SURVEYS & COUNTS GPS-BASED LOCATOR OTHER DETECTORS VIDEO DETECTORS SONAR DETECTORS RADAR DETECTORS CELL PHONES OTHER SENSORS TRAVEL PROBES DRIVER INPUTS ROADSIDE BEACONS SENSORS in TRANSPORTATION
atlas – can re-locate sensors where most needed (in case of monitoring congestion points) Each sensor is not constrained to be located at one point – can provide information on the WWW FRAMEWORK FOR ITS + REMOTE SENSING SO, HOW DOES REMOTE SENSING HELP? – can move with the “flow” (in security applications the sensor can follow suspicious movements) Can provide up-to-date traveler information, especially at disruptions and incidents – can provide information to en-route motorists in in-vehicle ATIS
atlas – for evacuation management during floods and disasters Can be deployed and re-deployed when fixed detectors fail FRAMEWORK FOR ITS + REMOTE SENSING SO, HOW DOES REMOTE SENSING HELP? (contd.) Can get better spatial measures such as turning ratios platoon dispersion, discharge rates, and travel times – better measures for wide-area dynamic traffic management (DTA-ATIS) – even better OD route volumes for transportation planning – for incident management
atlas Acceptance -- by users, by providers, by operators. CHALLENGES There are three major challenges Technical -- to integrate these sensors, computers, communication systems, people, infrastructure Cost: Will the benefits justify the costs?
atlas Questions?