PLATFORM ASSIGNMENT ANDSIMULATION MODELS

Henk TaaleAVV Transport Research Centre

Contents

• What is PLATOS?

• History

• Activities

• Organisation

• Projects and results

• Data for models

• Evaluation

What is PLATOS?

• True Public Private Partnership (PPP)• Government, Consultants, Universities• Problems

– current models inadequate to answer relevant questions

– data collection and formats

• Goal: development of modelling

system and knowledge transfer

History

• 1995: first talks

• 1996: start document by three partners

• 1997: business plan PLATOS

• 1998: signing the agreement by 10 partners

• 1998-2001: doing projects

• 1999: change financial structure

• 2001: evaluation

Activities

• User requirements

• Specification modelling system

• Research

• Data handling and transfer between models

• Model development

• Validation

• Knowledge transfer

Organisation

• Organisation– steering committee– programming workgroup– project groups

• Financial structure– fund for projects– money and man hours

Projects and results

• Guidelines for validation of models

• Dynamic OD estimation program

• Traffic flow during congestion

• Consequences for models of new

transport policy

• Standardisation measurement data

for models

Knowledge transfer

• Presentations

• Symposium for Dutch model developers and users

• Website (www.oag.nl/platos)

• Articles

Data for models (1)

• Growing need for data for models: input, calibration and validation

• Expanding monitoring– 1300 km motorways and other main roads– 7 traffic management centres– 1 traffic information centre

• Variety in systems and data formats

Data for models (2)

• Project phases– state of the art data availability and needs– defining format for measurement data– software development for conversion– software development for data management,

analysis and visualisation

Data for models (3)

• Data availability– monitoring on main road network: several

systems with different format– monitoring on urban roads: not done

frequently, but possible with traffic signal controllers

– other systems: parking systems, GIS,

weather information, road works

Data for models (4)

• Data standardisation

system

system

measurement data

measurement data

data conversion

converted data

input for models

Data for models (5)

• Data needs– national/regional models: network, OD matrix,

travel motives, user classes, demand– dynamic models: network, OD matrix, flows,

speeds, travel times, routes– microscopic models: network, following

behaviour, lane changing behaviour

Data for models (6)

• Developments– architecture for traffic management– gathering, exchanging, converting and storage

of data

• Phase 2: defining format for measurement data for use with dynamic models

• Will the project continue?

Evaluation

• More results than most PPP’s

• Less results than hoped for (too ambitious?)

• Lessons learned:– a shared problem is very important– good project management is invaluable– good research program is needed

• Future of PLATOS unsure

Colofon

ir. H. Taale

AVV Transport Research Centre

Tel.: +31 10 282 5881

Fax: +31 10 282 5644

E-mail: h.taale@avv.rws.minvenw.nl