1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefro
2、m, is the sole responsibility of the user.”SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions.QUESTIONS REGARDING THIS DOCUMENT: (724) 772-8512 FAX: (724) 776-0243TO PLACE A DOCUMENT
3、 ORDER; (724) 776-4970 FAX: (724) 776-0790SAE WEB ADDRESS http:/www.sae.orgCopyright 1998 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.A.SURFACEVEHICLE400 Commonwealth Drive, Warrendale, PA 15096-0001INFORMATIONREPORTJ2352ISSUEDSEP1998Issued 1998-09Mayday Industry Survey
4、Information Report1. ScopeThis SAE Information Report is a summary of information obtained by way of survey conductedduring the 2Q and 3Q of 1997 of MAYDAY system manufacturers. The data represented here has beencondensed from the original survey that was conducted by telephone interviews and faxes.
5、 The informationcontained within is limited to technical data as it pertains to vehicle and on-board MAYDAY system operations.It does not contain business, marketing, or any proprietary technical information. The complete survey resultsare in the possession of the SAE.The purpose of this survey was
6、to determine whether the general concept and architecture on which the SAEJ2313 MAYDAY Message Set was being developed is consistent with those of current MAYDAY systemhardware manufacturers. The survey was not intended for MAYDAY service providers or public serviceanswer points and emergency servic
7、e providers. Further studies, perhaps by organization such as NENA orAPCO, may be necessary to develop a complete vision of how complete MAYDAY response centers andsystems may be implemented. 2. References2.1 Applicable PublicationsThe following publication forms a part of this specification to the
8、extent specifiedherein. Unless otherwise indicated, the latest version of SAE publications shall apply.SAE J2313 (DRAFT)Standard for On-Board Land Vehicle MAYDAY Reporting InterfaceMAYDAY Survey Questionnaire Template attached as Appendix A for referenceCompleted MAYDAY Survey Questionnaire SAE J231
9、3 (DRAFT) (Business confidential)3. Summary of QuestionnaireAll participants were provided with the following diagram of the proposed SAEJ2313 Generic Vehicle MAYDAY System (see Figure 1).SAE J2352 Issued SEP1998-2-FIGURE 1GENERIC VEHICLE MAYDAY SYSTEM MODELQuestions were either answered over the te
10、lephone or by return fax. If questions were not answered or theanswers were deemed proprietary in nature, they were excluded from this report. The following is a summaryof the participants.A total of 13 prospective companies were identified6 of 13 participated willingly3 of 13 did not respond1 of 13
11、 said questionnaire did not pertain to their company1 of 13 was out of the business1 of 13 could not be reached1 of 13 was unwilling to participateFor a summary of answers, see Table 1.SAE J2352 Issued SEP1998-3-3.1 Summary of AnswersSee Table 1.4. General Conclusions and CommentsBased on the answer
12、s provided by the companies that responded tothis survey, several (probably obvious) conclusions may be drawn. 4.1 Question 1, Type of Deployment?Since the entities we were searching for were hardware manufacturers,it is not surprising that the majority of them were “for profit” companies. It is unl
13、ikely that state and federalagencies would be interested in becoming hardware manufacturers. There are, however, incentives forgovernment agencies to team with commercial manufacturers for projects that may involve ATIS infrastructuresprovided by the government. 4.2 Question 2, Complies with Generic
14、 System Model?All respondents confirmed that their systemarchitecture complied with the generic system architecture. Some had enhancements such as autonomousnavigation units and dead reckoning units, etc. In general, the generic architecture seems to be in line with thedesign concepts held by commer
15、cial equipment manufacturers. We conclude that the technical approachimplied by the message set (which is not specific to any given architectural embodiment) will not present anyconcerns. We further conclude from verbal comments made by responders that multi-function devices whichinclude the Mayday
16、function among others are likely to increase in the future. TABLE 1SUMMARY OF ANSWERSQuestionNumber Question Answers1 Type of deployment Private = 5Private/Public Partnership = 12 Complies with generic system model Yes = 6No = 03 Location determination technology used GPS only = 4GPS + dead reckonin
17、g = 24 Driver/user in-vehicle interface Push button = 5Dialed sequence on phone = 3Voice command = 0Automatically triggered = 45 User services provided Route guidance = 3Remote door opening service = 3Concierge service = 2Roadside assistance = 5Theft protection/recovery = 4Service locator = 36 How s
18、ervices are accessed? By voice = 4By pressing buttons = 57 Call takers (answer point type) Use their own = 3Use outside services or PSAPs = 38 Can call taker “3-way” call with PSAP and the vehicle? Yes = 4No = 29 Does system provide non-voice data? Yes = 3No = 310 Does your system interface with tra
19、ffic management agencies directly?Yes = 4No = 111 Which of the following interfaces could benefit from the development of standards?In-vehicle electronics interfaces (IDB, ODB others) = 4PSAP interface procedures (NENA, Telco) = 2Cellular telephone system = 2Vehicle MAYDAY message set = 2SAE J2352 I
20、ssued SEP1998-4-4.3 Question 3, Location Technology Used?Most of the respondents said they used GPS technologies. Asthe price of GPS chip sets decline and as more vehicle-based GPS receivers are sold, MAYDAY systemutilizing GPS technologies will be easier and cheaper to implement. Most implementers
21、recognize the inherentlimitation in using GPS data as the sole means of position determination, however, most also hold that this is aresponse center issue rather than a vehicle equipment problem. 4.4 Question 4, Driver/User In-Vehicle Interface?The responses here were varied, most used dedicatedbut
22、tons to activate their MAYDAY systems, some used a combination of phone keypad entries and four offeredautomatically activated MAYDAY initiations. Little may be drawn from these results. They may be an argumentfor standardizing the interfaces so that drives will be familiar with methods of activatio
23、n regardless of whatvehicle they may be in. We presume that such an effort would be performed by the SAE - ITS DivisionsHuman factors committee. There remain liability concerns with regard to attachment to the original equipmentSRS system at this time. The IDB bus gateway may provide a means to over
24、come this concern. At least onevendor uses duplicate accelerator sensor devices to sense an automated deployment and is then able to judgethe severity from this data. Areas like this which allow private advancement of the art seem problematic tostandardizing into the message set. 4.5 Question 5, Use
25、r Service Provided?Here again, the responses ran the gambit. This will probably be thedifferentiating factor for consumers when choosing a MAYDAY service provider. The general concept ofinteroperable MAYDAY equipment also brings with it the concept that equipment purchase could be separatefrom the p
26、rivate response centers (one or more) which provide various services. In the business modelemployed today, purchase of equipment from a specific vendor implies an operational contract with a variety ofservice response centers all tied to that brand name. If consumers are in a position to choose thei
27、r serviceproviders, the variety of services offered is expected to become even more diverse. 4.6 Question 6, How Are Services Accessed?Here as in question 4, most of the manufacturers use keypad orbutton presses to access other services, however, the majority also have the customer speak to a call t
28、akerwho initiates the service for the customer. At present, manually (spoken or button activated) interventionappears to be the norm. In the future as more mature compute resources are added to MAYDAY (say anavigation computer) one can reasonably expect algorithm driven choices to appear. (e.g., If
29、then call else if then call ) A number of firms are adding vehicle diagnostics to the abilities of the MAYDAY systemwhich further indicate trends in this direction. 4.7 Question 7, Call Takers (Answer Point Type)?The respondents were split on this answer, three used theirown call takers, three did n
30、ot. Some of the equipment manufacturers contacted used the same call takingcompanies, usually telephonic burglar alarm monitoring companies, to take calls for them. Some simply dial911 for the driver. It should be pointed out that automatically dialing 911 for the user has a number of impliedliabili
31、ty issues which it is not at all clear the equipment manufactures have fully thought out. Neither SAE notNENA (The National Emergency Number Association) have developed any policy or recommendationsregarding this operational choice. 4.8 Question 8, Can Call Takers “3-Way” Call with PSAP and Vehicle?
32、The majority of the respondents saidyes. This will become a procedural issue that will have to be determined by NENA or others on a localjurisdiction by jurisdiction basis. Based on discussions with attendees at the NENA national convention, itseems that some PSAPs dont want the private call taker t
33、o stay on the line, others do.4.9 Question 9, Does Your System Provide Non-Voice Data?Again, the respondents were split. If yourPSAP or Private PSAP doesnt support non-voice data, why send it? Development of this document andefforts of organizations like NENA to develop operational procedures will h
34、elp to resolve this issue.SAE J2352 Issued SEP1998-5-4.10 Question 10, Does Your System Interface With Traffic Management Agencies Directly?The majority ofthe respondents answered yes. This may indicate an interest of providing traffic data to the community as awhole. This may also be very misleadin
35、g in that “interface” may simply mean that a display terminal of sometype was located at some kind of TMC, not that any actual integration of data or the effect of the calling vehicleon the roadway was merged into the traffic network. It may also reflect that some early MAYDAY operationaltests perfo
36、rmed under FHWA sponsorship were operated out of TMC offices. In retrospect, it would be beenbetter to have ascertained how many (or few) were integrated with real PSAPs in some manner greater then byvoice phone line. It should be pointed out that many states are routing wireless (cellular) call to
37、highway patrollocations which are in fact often co-located with the TMC function. 4.11 Question 11, Which of the Following Interfaces Could Benefit from the Development of Standards?Though the answers varied, the majority considered work being done by the IDB committee and others tostandardize in-ve
38、hicle interfaces to be of great value. The respondents are hardware manufacturers so it is notsurprising that they would be interested in how their equipment interfaces with the vehicle and in work whichwould broaden their product offering while reducing expenses for installation.DEVELOPED BY THE IN
39、-VEHICLE SYSTEMS INTERFACE COMMITTEESAE J2352 Issued SEP1998-6-APPENDIX AMAYDAY SURVEY QUESTIONNAIRE TEMPLATE SAE J2313A.1 MAYDAY Survey Questionnaire Template SAE J2313See Figure A1.Figure A1MAYDAY SURVEY QUESTIONAIRE TEMPLATE SAE J2313SAE J2352 Issued SEP1998-7-FIGURE A1MAYDAY SURVEY QUESTIONNAIRE
40、 TEMPLATE SAE J2313 (CONTINUED)SAE J2352 Issued SEP1998-8-FIGURE A1MAYDAY SURVEY QUESTIONNAIRE TEMPLATE SAE J2313 (CONTINUED)SAE J2352 Issued SEP1998-9-FIGURE A1MAYDAY SURVEY QUESTIONNAIRE TEMPLATE SAE J2313 (CONTINUED)SAE J2352 Issued SEP1998-10-FIGURE A1MAYDAY SURVEY QUESTIONNAIRE TEMPLATE SAE J23
41、13 (CONTINUED)SAE J2352 Issued SEP1998RationaleNot applicable.Relationship of SAE Standard to ISO StandardNot applicable.ApplicationThis SAE Information Report is a summary of information obtained by way of survey conductedduring the 2Q and 3Q of 1997 of MAYDAY system manufacturers. The data represe
42、nted here has beencondensed from the original survey that was conducted by telephone interviews and faxes. Theinformation contained within is limited to technical data as it pertains to vehicle and on-board MAYDAYsystem operations. It does not contain business, marketing, or any proprietary technica
43、l information.The complete survey results are in the possession of the SAE.The purpose of this survey was to determine whether the general concept and architecture on which theSAE J2313 MAYDAY Message Set was being developed is consistent with those of current MAYDAYsystem hardware manufacturers. Th
44、e survey was not intended for MAYDAY service providers or publicservice answer points and emergency service providers. Further studies, perhaps by organization suchas NENA or APCO, may be necessary to develop a complete vision of how complete MAYDAY responsecenters and systems may be implemented. Re
45、ference SectionSAE J2313 (DRAFT)Standard for On-Board Land Vehicle MAYDAY Reporting InterfaceMAYDAY Survey Questionnaire Template attached as Appendix A for referenceCompleted MAYDYA Survey Questionnaire SAE J2313 (DRAFT) (Business confidential)Developed by the SAE In-Vehicle Systems Interface Committee
