【正文】 and isolating relatively small munication zones are important. This briefing outlines an approach to using the selected DSRC technology in a way that maximizes the realization of the user requirements. The topics listed below are discussed in the following charts and were used in the development of the concept of operation: A. Applications B. User Requirements Excerpts C. Technology Characteristics D. Channel Frequency Assignments E. Basic Concepts DSRC APPLICATIONS PUBLIC SAFETY and PRIVATE ? APPROACHING EMERGENCY VEHICLE (WARNING) ASSISTANT (3) ? EMERGENCY VEHICLE SIGNAL PREEMPTION ? ROAD CONDITION WARNING ? LOW BRIDGE WARNING ? WORK ZONE WARNING ? IMMINENT COLLISION WARNING (D) ? CURVE SPEED ASSISTANCE [ROLLOVER WARNING] (1) ? INFRASTRUCTURE BASED – STOP LIGHT ASSISTANT (2) ? INTERSECTION COLLISION WARNING/AVOIDANCE (4) ? HIGHWAY/RAIL [RAILROAD] COLLISION AVOIDANCE (10) ? COOPERATIVE COLLISION WARNING [VV] (5) ? GREEN LIGHT OPTIMAL SPEED ADVISORY (8) ? COOPERATIVE VEHICLE SYSTEM – PLATOONING (9) ? COOPERATIVE ADAPTIVE CRUISE CONTROL [ACC] (11) ? VEHICLE BASED PROBE DATA COLLECTION (B) ? INFRASTRUCTURE BASED PROBE DATA COLLECTION ? INFRASTRUCTURE BASED TRAFFIC MANAGEMENT – [DATA COLLECTED from] PROBES (7) ? TOLL COLLECTION ? TRAFFIC INFORMATION (C) ? TRANSIT VEHICLE DATA TRANSFER (gate) ? TRANSIT VEHICLE SIGNAL PRIORITY ? EMERGENCY VEHICLE VIDEO RELAY ? MAINLINE SCREENING ? BORDER CLEARANCE ? ONBOARD SAFETY DATA TRANSFER ? VEHICLE SAFETY INSPECTION ? DRIVER’S DAILY LOG ? ACCESS CONTROL ? DRIVETHRU PAYMENT ? PARKING LOT PAYMENT ? DATA TRANSFER / INFO FUELING (A) – ATIS DATA – DIAGNOSTIC DATA – REPAIRSERVICE RECORD – VEHICLE COMPUTER PROGRAM UPDATES – MAP and MUSIC DATA UPDATES – VIDEO UPLOADS ? DATA TRANSFER / CVO / TRUCK STOP ? ENHANCED ROUTE PLANNING and GUIDANCE (6) ? RENTAL CAR PROCESSING ? UNIQUE CVO FLEET MANAGEMENT ? DATA TRANSFER / TRANSIT VEHICLE (yard) ? TRANSIT VEHICLE REFUELING MANAGEMENT ? LOCOMOTIVE FUEL MONITORING ? DATA TRANSFER / LOCOMOTIVE PRIVATE PUBLIC SAFETY ATIS Advanced Traveler Information Systems CVO Commercial Vehicle Operations EV Emergency Vehicles IDB ITS Data Bus THRU – Through VV – Vehicle to Vehicle () – Applications Submitted by GM/Ford/Chrysler (A Z) – Applications Submitted by DaimlerChrysler DSRC APPLICATIONS by COMMUNICATION CATEGORIES ? ACCESS CONTROL ? TOLL COLLECTION ? DATA TRANSFER / INFO FUELING (A) ? TRAFFIC INFORMATION (C) ? DRIVETHRU PAYMENT ? PARKING LOT PAYMENT ? INFRASTRUCTURE BASED PROBE DATA COLLECTION ? RENTAL CAR PROCESSING ? MAINLINE SCREENING ? BORDER CLEARANCE ? ONBOARD SAFETY DATA TRANSFER ? UNIQUE CVO FLEET MANAGEMENT ? DRIVER’S DAILY LOG ? VEHICLE SAFETY INSPECTION ? TRANSIT VEHICLE DATA TRANSFER (gate) ? TRANSIT VEHICLE REFUELING MANAGEMENT ? LOCOMOTIVE FUEL MONITORING ? ROLLOVER WARNING ? LOW BRIDGE WARNING ? CURVE SPEED ASSISTANCE [ROLLOVER WARNING] (1) ? INFRASTRUCTURE BASED STOP LIGHT ASSISTANT (2) ? INTERSECTION COLLISION WARNING/AVOIDANCE (4) ? COOPERATIVE COLLISION WARNING [VV] (5) ? VEHICLE BASED PROBE DATA COLLECTION (B) ? COOPERATIVE ADAPTIVE CRUISE CONTROL (ACC) ? COOPERATIVE VEHICLE SYSTEM – PLATOONING (9) ? HIGHWAY/RAIL [RAILROAD] COLLISION AVOIDANCE (10) ? IMMINENT COLLISION WARNING (D) ? EMERGENCY VEHICLE VIDEO RELAY ? ROAD CONDITION WARNING ? WORK ZONE WARNING ? APPROACHING EMERGENCY VEHICLE ASSISTANT (3) ? EMERGENCY VEHICLE SIGNAL PREEMPTION ? TRANSIT VEHICLE SIGNAL PRIORITY ? GREEN LIGHT OPTIMAL SPEED ADVISORY (8) CVO – Short Medium Range (0 – 90 m) ALL VEHICLES Short Range (0 – 15 m) ALL VEHICLES Extended Range (90 – 335 m) PUBLIC SAFETY Long Range (300 – 1000 m) ? TOLL COLLECTION ? DATA TRANSFER / INFO FUELING (A) ? DATA TRANSFER / CVO / TRUCK STOP ? DATA TRANSFER / TRANSIT VEHICLE (yard) ? DATA TRANSFER / LOCOMOTIVE ALL VEHICLES – Short Medium Range (0 – 90 m) () – Applications Submitted by GM/Ford/Chrysler (A) – Applications Submitted by DaimlerChrysler APPLICABILITY UNDER INVESTIGATION ? ENHANCED ROUTE PLANNING and GUIDANCE (6) ? INFRASTRUCTURE BASED TRAFFIC MANAGEMENT – [DATA COLLECTED from] PROBES (7) USER REQUIREMENTS EXCERPTS ? Interoperability across North America where All RSUs can municate with ALL OBUs and ALL OBUs can municate to ALL other OBUs at the lowest tier of capability. Also, tiered devices shall be implemented such that each level of device can implement all the modes of operation of the levels of devices below it. ? All Weather Operation ? Twoway (roadside to vehicle) Communication ? Twoway (vehicle to vehicle) Communication subject to review of impact on system requirements ? Oneway Communication Require broadcast capability without being part of a ? Extremely low latency in the order of milliseconds Includes acquisition and data transfer ? The system will support authentication and access controls (Layers 1 and 2 must support security controls) ? The ISO L1 and L2 must be able to handle a large number of units in the munication zone. On the order of 50 to 100. The system must not collapse if this number is exceeded. ? Transaction Size 500 Bits to 100 Mbytes or more ? Traffic Speed 0 to 200 km/h (0 to 120 mph ) ? Traffic Flow Rate 3000 v/h/l (1 to 8 lanes) ? Minimum coordinated RSU Separation 3 m (10 ft) GHz DSRC OPERATIONAL CONCEPT/TECHNOLOGY REQUIREMENTS USER REQUIREMENTS EXCERPTS (continued) ? Multimodal (road and rail) ? Must allow uncoordinated RSUs implementing different services on the same channel to operate in close proximity 15 m (50 ft