Statement of Requirements

Transcription

1 Statement f Requirements Intrductin This dcument shuld nrmally cver tw main tpics: an appreciatin f the adequacy and shrtcmings f the existing mdel and a specificatin f the anticipated future requirements fr the mdel, in terms f the capabilities sught and the uses t which it is intended t be put. Examples are given in Figures 1-3, which drive frm the Wellingtn city mdel, while the bjectives fr the Auckland mdel are attached at the end f this text. Issues Cncerning the Current Mdel An example f a list f key issues, and areas where mdel imprvement is sught, is given in Figure 1. This wuld nrmally draw n an independent review f the existing mdel and cmments made by stakehlders rally, in writing r at a frmal wrkshp. Future Mdelling Needs A wrkshp with stakehlders wuld usually prvide an utline f the mdelling needs, in terms f what the mdel is t be used fr and shuld be capable f respnding t. An example is given in Figure 2. Functinal Design Issues These tw utcmes are then summarised in Figure 3, which relates the abve requirements t each mdule f the mdel, thus identifying the issues which the functinal specificatin f the mdel must respnd. Often, these lists are lng and may be nt be realistic. In which case it wuld be sensible t seek t identify the main agree pririties in the list f issues.

2 Figure 1 Examples f a List f Issues Relating t the Current Mdel Lack f precisin in public transprt travel patterns Reliability f demgraphic frecasts Reasnableness f frecast grwth rates Representatinal detail (such as the rad netwrk, intersectins and related delays) Car wnership mdel and frecasts Cmmercial and freight mdelling Strnger representatin f the underlying drivers f shpping and recreatinal travel (reflected in the higher interpeak and weekend travel grwth rates) Frmal cnsistent interfaces between strategic and prject mdels Study area shuld be reviewed Fit t rad screenlines and individual rutes Peak spreading mdel and frecasts Adequacy f the mdel fr the range f intended applicatins

3 Figure 2 An Example f Mdelling Needs: Plicies and Scenari Pririties Land Use/Demgraphics: - land use mix and distributin - retail patterns (large centres) - re-structuring f businesses - changing wrk structures and wrkfrce - evlving family structures Rads: - infrastructure/crridr studies - tlling and ther rad charges - car pling - tidal flw - HOV lanes - strategic traffic management Parking supply plicies (price and capacity): - cmmuting/lng term - business and leisure/shpping/shrt term Nn-Mtrised Mdes - access t central statin Public Transprt - fares - services/headways - rail netwrk extensins - bus pririties - weekend services - funding - lcal CBD services - infrastructure prject appraisals - park-&-ride - quality imprvements (eg railway stck) - interchanges/hubs - light rail Cmmercial and freight traffic: - business cars and cmmercial vehicles - prts and airprt - interpeak imprtance Other Travel demand management

4 Figure 3 Required Extensins t Mdel Functinality Issues General Interfaces with prject mdels Study area Representatinal detail Peak spreading mdel and frecasts Adequacy fr intended range f applicatins Segmentatin Cmmercial and freight traffic Land Use/Demgraphics Reliability f demgraphic frecasts Reasnableness f frecast grwth rates Car Ownership Review car wnership grwth prjectin Reasnableness f frecast grwth rates Trip Ends Reasnableness f frecast grwth rates Mde Chice/Distributin Lack f precisin in public transprt travel patterns Fit t rad screenlines Rad Assignment/Netwrks Fit t individual rutes Representatin f rad netwrk, intersectins and related delays Public Transprt Netwrks and Assignment Plicy and Scenari Pririties Business cars and cmmercial vehicles Prts and airprt Interpeak imprtance Evlving family structures Changing wrk structures and wrkfrce Land use mix and distributin Retail patterns Re-structuring f businesses Changing wrk structures and wrkfrce Evlving family structures Shpping travel drivers Car pling Infrastructure Tlling and rad charges Tidal flw HOV lanes Strategic traffic management Parking supply and pricing Travel demand management fares services/headways bus pririties funding lcal CBD services infrastructure prject appraisals park-&-ride quality imprvements (eg railway stck) interchanges/hubs access t central statin light rail

5 The Auckland Mdel Objectives The fllwing cntractual list f requirements was based n a series f client spnsred wrkshps. a) That the tw mdels (ASP3, the land use mdel, and ART3, the transprt mdel) prvide the analytical framewrk within which t evaluate cmplex interactins and plan Auckland s transprt system with cnfidence up t b) That the ASP3 mdel be sensitive t: Changes in the regin demgraphic, ecnmic and scial structures Changes in the lcatin, nature and quantity f land use activities in the regin Changes in land use and activity lcatin in respnse t changes in the transprtatin system as develped in ART3 c) That the ART3 mdel be sensitive t: Reginal grwth scenaris representing changes in the regin s demgraphic and emplyment cmpsitin, lcatin and density, as represented by the ASP mdel The pssible additin f reginally significant transprt infrastructure Effects f cngestin n trip making (trip generatin/suppressin) Changes in the distributin f trips (trip distributin / redistributin) Changes in mtrised and walking and cycling mdes f transprt (mde split) Changes in the rutes f travel (trip assignment and rute chice) Changes in the timing f trips (peak spreading and suppressed demand) e) That the ASP3 mdel allw the investigatin and evaluatin f the fllwing srts f reginal plicies and issues: The Reginal Grwth Strategy and ther strategic grwth ptins fr th regin, including: Land zning plicies Land pricing plicies Plicies related t the lcatin f majr activities Mixed land uses Densificatin and urban sprawl e) That the ART3 mdel allw the investigatin and evaluatin f the fllwing srts f reginal plicies and issues: The additin f majr transprt infrastructure, including majr public transprt infrastructure and plans The management and expansin f the regin s public transprt system The allcatin f scarce capital between cmpeting transprt investments Taxatin r charging plicies aimed at specific parts f the transprt system

6 Nn-pricing demand management measures Plicies t reduce the energy cnsumptin f the regin Plicies t reduce emissins f pllutants Plicies t imprve the health and safety transprt system users Plicies t imprve walking and cycling f) The ATM2 prject will prvide essential tls fr develping and evaluating plicies and prjects that are aligned with the gals and bjectives and statutry requirements f the Land Transprt Management Act 2003, the Lcal Gvernment (Auckland) Amendment Act 2004, the New Zealand Transprt Strategy the Reginal Grwth Strategy, the Reginal Plicy Statement and the Reginal Land Transprt Strategy. g) That the mdels prvide infrmatin in a frmat that is cmpatible with the needs f the Auckland Passenger Transprt (APT) and sub-reginal prject assignment mdels. h) That the mdels be sund, rbust, reliable, have sund theretical bases reflecting internatinal best practice and at the minimum meet Land Transprt NZ PEM recgnised standards fr mdel calibratin, validatin and frecasting. i) T ensure the satisfactry calibratin f the ART3 and ASP3 mdels t base year cnditins. j) T ensure that the mdel develpment and calibratin receives apprval frm a Peer Reviewer appinted by Land Transprt NZ and the ARC. k) That the mdels be fully explained t thse invlved in transprt planning in Auckland during their develpment, s that they can be used with cnfidence by them n cmpletin. This will invlve the prductin f technical dcumentatin including manuals explaining the use f the mdels as well as fur wrkshps f apprximately ne day each. The wrkshp will be assciated with fllwing phases: Mdel specificatins Specificatins f data requirements Results f data analysis Calibratin, validatin and testing l) That the mdel sftware shuld be cnsidered and in ding s the fllwing aspects need t be taken int accunt: Well established and recgnised internatinal track recrd t minimise the risk t the ARC f being a guinea pig fr new r recently develped sftware; Cmpatibility with transprt and land use mdelling sftware used by reginal mdelling stakehlders Apprpriateness t the mdel gals and required utputs A seamless interface between the ASP3 and ART3 mdel sftware t enable infrmatin exchange Widely distributed internatinal supprt and user grups

7 Cmpatibility with GIS systems at the ARC and its reginal partners. Nte that the ARC currently use the ESRI suite f GIS prducts including ArcGIS Desktp, ArcView, ArcIMS, ArcSDE Quality f graphical utputs fr presentatin and graphical analysis purpses Recgnised internatinal best practice standards k) That within the cnstraints f ther bjectives, the mdels be easy t use, respnsive and enable the timely evaluatin f varied alternatives. l) That the data cllected fr the ATM2 Prject be made available t interested parties as a database fr further analysis r infrmatin. This database will cntain much useful data and shuld be used as widely as pssible. m) That the mdels meet recgnised internatinal best practice standards in respect f their develpment, structure, theretical bases, frecasting and calibratin standards. [2013]