Traffic Information Specialist: Roslyn S Trayford
Director, Custom Traffic Pty Ltd, Australia FRMIT, MRAeS, C Eng (UK)
Graduated as an Aeronautical Engineer: after ten years in Flight Test Research joined CSIRO Australia to become a Principal Scientist in the successive fields of: solar desalination, agricultural aviation and, subsequently, in automotive fuel economy and car driver advisory systems.
From the period 1975 to 1990, this latter activity as Project Leader culminated in the ADVISE driver information system being installed and trialled on Canterbury Road in Melbourne. This HK$14.0 million project was undertaken with full cooperation between the CSIRO and VicRoads and required a deep knowledge of the SCATS signal control system, as evidenced by the 17 scientific papers produced by Ros's CSIRO team.
In 1989 the above team moved from the CSIRO to establish a startup software company, Dynamic Transport Management. Ros as the co-founding Director and held the position of Research Manager held until 1998. DTM specialised in producing scheduling and dispatch systems for the courier and freight sectors, examples being Allied Express operations in Australia, three shift operation milk pick for 1000 dairy farms in New Zealand and gas tanker deliveries circumnavigating the M25 boundary in the U.K.
In 1995-97 he devised and operated with C. Karl an Intelligent Voice Recognition based car pooling scheme in Sydney with the assistance of Commonwealth and NSW Government grants.
Currently Ros is co-founder and Director of Custom Traffic Pty Ltd.
Traffic Information Specialist: Dr Julian van Leersum
Senior Research Fellow
Custom Traffic Pty Ltd
BE Mechanical (1st Class Hons), BSc Maths, PhD Eng (Monash)
Julian worked for CSIRO as a Senior Research Scientist for 12 years before spending 7 years lecturing in Applied Mathematics at the Queensland University of Technology. Whilst most of his work has related to modelling thermally driven systems, he has spent considerable time studying, modelling and optimising novel traffic management and information systems.
Julian is an expert on the application of numerical methods to solving optimisation problems. His previous work in traffic includes modelling of a dynamic advisory speed sign traffic management system in the 1980s, linking of traffic assignment models to traffic flow optimisation models and optimisation of the interactions between desired route choice and traffic network performance in the last few years with Custom Traffic.
Julian also is the author of a commercial computer program sold world wide to over 300 developers of go kart engines. This software which he wrote optimises the performance of 2 stroke engines.