1、BS ISO22951:2009ICS 03.220.01; 35.240.60NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDData dictionaryand message setsfor preemption andprioritization signalsystems for emergencyand public transportvehicles (PRESTO)This British Standardwas published under theau
2、thority of the StandardsPolicy and StrategyCommittee on 31 August2009 BSI 2009ISBN 978 0 580 68674 0Amendments/corrigenda issued since publicationDate CommentsBS ISO 22951:2009National forewordThis British Standard is the UK implementation of ISO 22951:2009.The UK participation in its preparation wa
3、s entrusted to TechnicalCommittee EPL/278, Road transport informatics.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct applica
4、tion.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS ISO 22951:2009Reference numberISO 22951:2009(E)ISO 2009INTERNATIONAL STANDARD ISO22951First edition2009-01-15Data dictionary and message sets for preemption and prioritization signal systems for emergency and pub
5、lic transport vehicles (PRESTO) Dictionnaire de donnes et ensembles de messages pour la premption et la priorisation des systmes de signaux pour les vhicules durgence et de transport public (PRESTO) BS ISO 22951:2009ISO 22951:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In ac
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8、inting. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2009 All rights reserved. Unless otherw
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10、office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2009 All rights reservedBS ISO 22951:2009ISO 22951:2009(E) ISO 2009 All rights reserved iiiContents Page Foreword iv Introduction v 1 Scope .
11、1 2 Normative references . 2 3 Terms and definitions. 2 4 Symbols and abbreviated terms . 3 5 Data dictionary and message sets for PRESTO 3 5.1 Data dictionary 3 5.2 Message sets. 4 Annex A (informative) The concept of PRESTO 5 Annex B (informative) PRESTO architecture. 7 Annex C (normative) PRESTO
12、requirements list 17 Annex D (informative) Needs for standardization. 43 Annex E (informative) Background of constructing PRESTO system architecture (SA) . 44 Annex F (informative) Practical examples of PRESTO. 47 Bibliography . 50 BS ISO 22951:2009ISO 22951:2009(E) iv ISO 2009 All rights reservedFo
13、reword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a tec
14、hnical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters o
15、f electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated
16、to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible fo
17、r identifying any or all such patent rights. ISO 22951 was prepared by Technical Committee ISO/TC 204, Intelligent transport systems. BS ISO 22951:2009ISO 22951:2009(E) ISO 2009 All rights reserved vIntroduction It is very important that police cars, fire engines, and other emergency vehicles arrive
18、 at the scene to which they are dispatched as soon as possible in order to improve crime prevention rate, lifesaving rate etc. Therefore, various countries are using, or developing, preemption signal-systems to support the smooth travelling of such vehicles. In addition, some countries use these pri
19、ority signal-controls for buses and other public transport vehicles to provide punctual and more convenient service. This International Standard standardizes communication messages in these preemption signal-systems for emergency and public transport vehicles, aiming to promote system introduction t
20、hrough developing a common infrastructure. BS ISO 22951:2009BS ISO 22951:2009INTERNATIONAL STANDARD ISO 22951:2009(E) ISO 2009 All rights reserved 1Data dictionary and message sets for preemption and prioritization signal systems for emergency and public transport vehicles (PRESTO) 1 Scope This Inte
21、rnational Standard relates to systems that use priority signal control functions to help emergency vehicles operate. This type of system, as shown in Figure 1, is composed of a traffic management centre, in-vehicle units, roadside communication units, and roadside units. Public transport vehicles su
22、ch as buses are also targeted to receive priority signal control service. The scope of standardization includes message sets and data dictionary related to the communications as follows: between a roadside communication unit and each in-vehicle unit, between a roadside communication unit and other r
23、oadside units, between in-vehicle units and roadside units. This International Standard concerns only information related to priority signal control and does not deal with information provision such as that of the situations at scenes. Since it is necessary to handle public transport vehicles in acc
24、ordance with the conditions of individual cities and regions, the section in the messages and the data dictionary that are concerned with priority signal control for the vehicles are treated as an option. Furthermore, the standardization does not depend on the type of communication medium used. Figu
25、re 1 Scope of standardization work BS ISO 22951:2009ISO 22951:2009(E) 2 ISO 2009 All rights reserved2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the late
26、st edition of the referenced document (including any amendments) applies. ISO 14817, Transport information and control systems Requirements for an ITS/TICS central Data Registry and ITS/TICS Data Dictionaries 3 Terms and definitions For the purposes of this document, the terms and definitions given
27、in ISO 14817 and the following apply. 3.1 antenna roadside equipment that communicates with the roadside units such as signal controllers and the in-vehicle units using radio signals 3.2 beacon roadside equipment that communicates with the roadside units such as the signal controllers and the in-veh
28、icle units 3.3 data dictionary listing of data elements (and their characteristics) that meets the information and functional needs of a system 3.4 data element atomic element of information NOTE A data element is a syntactically formal representation of some information of interest (such as a fact,
29、 proposition, observation, etc.) about some entity of interest (e.g. a person, place, process, property, object, concept, association, state, event). 3.5 in-vehicle unit in-vehicle equipment that transmits/receives information to/from the roadside communication units and, in some cases, outputs info
30、rmation, for example, on its screen 3.6 message sets set of basic messages that are normally used in business-oriented applications 3.7 roadside communication unit roadside equipment that communicates with the in-vehicle units and the roadside units, e.g. beacons and antennas 3.8 roadside unit roads
31、ide equipment that controls signals and provides information, e.g. the signal controllers and the information board controllers 3.9 signal controller roadside equipment that controls the lighting timings of traffic lights BS ISO 22951:2009ISO 22951:2009(E) ISO 2009 All rights reserved 33.10 traffic
32、management centre central system that controls the functions of traffic data collection, signal control, and information service based on collected data, etc. 3.11 vehicle ID identification number used for the identification of emergency and/or public transport vehicles 4 Symbols and abbreviated ter
33、ms PRESTO data dictionary and message sets for preemption and prioritization signal systems for emergency and public transport vehicles 5 Data dictionary and message sets for PRESTO Tables 1 and 2 give the list of data dictionary and message sets within the scope of the standardization, in-line with
34、 the data concept specified in ISO 14817. Further details are given in Annex C. 5.1 Data dictionary Table 1 Data dictionary within the scope of the standardization Data concept type ASN.1 object identifier ASN.1 name Descriptive name Data element concept iso standard presto concepts dec 1 10 PSC.aut
35、hority-classification PSC.authorityClassification iso standard presto concepts de 1 20 PSC.vehicle-code PSC.vehicleCode iso standard presto concepts de 1 30 PSC-transport-mode PSC.transportMode iso standard presto concepts de 1 40 PSC-priority-signal-request-flag PSC.prioritySignalRequestFlag iso st
36、andard presto concepts de 1 50 PSC-request-intersection id PSCrequestIntersectionID iso standard presto concepts de 1 60 PSC-direction-at-intersection PSC.directionAtIntersection iso standard presto concepts de 1 70 PSC-spot-id PSC.spotID iso standard presto concepts de 1 80 PSC-spot-passing-time PS
37、C.spotPassingTime iso standard presto concepts de 1 90 PSC-vehicle-speed PSC.vehicleSpeed iso standard presto concepts de 1 100 PSC-vehicle-acceleration PSC.vehicleAcceleration iso standard presto concepts de 1 110 PSC-travel-distance PSC.travelDistance Data element iso standard presto concepts de 1
38、 120 PSC-transmission-time PSC.transmissionTime iso standard presto concepts df 1 130 PscVehicleID PscVehicleID:frame iso standard presto concepts df 1 140 PscPrioritySignalRequest PscPrioritySignalRequest:frame iso standard presto concepts df 1 150 PscVehicleCurrentLocation PscVehicleCurrentLocatio
39、n:frameiso standard presto concepts df 1 160 PsctravelInformation PsctravelInformation:frame iso standard presto concepts df 1 170 PscSpotLocation PscSpotLocation:frame Data frame iso standard presto concepts df 1 180 PscSpotPassingPoint PscSpotPassingPoint:frame BS ISO 22951:2009ISO 22951:2009(E) 4
40、 ISO 2009 All rights reserved5.2 Message sets Table 2 Messages sets within the scope of the standardization Data concept type ASN.1 object identifier ASN.1 name Descriptive name iso standard presto concepts mes 1 190 PscVehicleInformation PscVehicleInformation:message iso standard presto concepts me
41、s 1 200 PscVehicleData PscVehicleData:message Message iso standard pi 11 PiSchedAdherenceOffSched PiSchedAdherenceOffSched:messageBS ISO 22951:2009ISO 22951:2009(E) ISO 2009 All rights reserved 5Annex A (informative) The concept of PRESTO A.1 Purpose PRESTO allows emergency vehicles such as police c
42、ars, fire engines and so forth to speedily and accurately respond to emergencies by carrying out traffic signal control with the highest priority and guiding optimal routes for these vehicles. In addition, this system draws the attention of general vehicles and pedestrians by indicating the approach
43、 of emergency vehicles on message boards. This system carries out priority signal control for public transport vehicles such as buses and trams. By providing travelling support to emergency vehicles and public transport vehicles in this way, the system intends to achieve the realization of the follo
44、wing effects. a) Reduction in the response time of emergency vehicles: early resolution of accidents and improvement of arrest rates; support for speedy rescue activity and improvement of lifesaving rates. b) Reduction of the number of traffic accidents associated with en-route emergency vehicles. c
45、) Improvement of convenience of public transport vehicles such as buses and trams by securing the regular time operation of them. A.2 Basic function This system has the functions of priority signal control, route guidance, and safety support. The priority signal control function includes macro contr
46、ol function and micro control function. The macro control function transmits signal parameters beforehand, for example, giving maximum green time in the direction of emergency vehicles and public transport vehicles to the group of traffic signals at intersections from the traffic management centre,
47、so it is possible to reduce traffic jams and lines of vehicles waiting for a green signal, which are hindrance factors to a priority traffic route. The micro control function extends the green time or reduces the red time by having the vehicle sensor detect approaching emergency vehicles and public
48、transport vehicles in order to let those vehicles pass through the green light. The route guidance function effectively supports an early arrival of emergency vehicles at the scene of an accident by guiding the emergency vehicles from their current position to the scene of the accident through the r
49、ecommended route. The macro control function, as explained above, links to the route guidance function and minimizes disadvantages suffered by general vehicles and pedestrians. The safety support function draws attention of the general vehicles and pedestrians to the approaching emergency vehicle via the message board. BS ISO 22951:2009ISO 22951:2009(E) 6 ISO 2009 All rights reservedFurthermore, the priority signal control function and safety support function carry out the ab
