Traffic Demand Management through the Singapore Road Pricing system – studying evidence of cognitive biases prevalent in consumer behaviours

As part of the ITS 50th anniversary celebrations, we welcome alumna Wee Ping Koh, MSc Transport Planning and Engineering 2017 as our guest speaker today.

Access: To join the seminar please visit:

Biog: Wee Ping is currently Deputy Chief Specialist (Traffic Engineering) in the Road and Traffic Specialist Subgroup, under the Transportation Technology Group in LTA. She is responsible for areas of traffic modelling, traffic data analysis and demand management. She collaborates with operational divisions on domain-related engineering matters, including traffic data-driven analysis, development of microscopic traffic models to facilitate engineering solutions and assessments, as well as congestion pricing as a traffic demand management tool. Wee Ping also contributes to technical and project working committees on several traffic technology projects, conduct applied research to help address traffic engineering questions, and publish scientific papers based on these research. During her studies at ITS she was the winner of the AECOM Prize for the best MSc (Eng) Transport Planning and Engineering student 2017.

Abstract: Singapore manages traffic demand through a myriad of tools, ranging from ownership controls, to road pricing, also known as the Electronic Road Pricing (ERP) system. The ERP system has been in operations in Singapore since 1998 and has seen consistent success in managing traffic in this city with high vehicle usage and limited land space. ERP rates are reviewed quarterly and adjusted for the relevant 30-min periods based on speeds criteria. Wee Ping will share with you the policy and operations framework of the ERP, and discussed how she has studied 33 rate changes across 6 expressway ERP pricing gantries between the years of 2012 and 2018, to better understand travel behaviour changes of frequent vs infrequent car drivers, and whether these travel behaviours also reflect the consumer behaviours of loss aversions and the theory of diminished sensitivity.

There will be a Q&A session at the end of the presentation curated by Dr Chandra Balijepali, and everyone is encouraged to participate.

Please ensure your camera and microphone are switched off during the presentation to help preserve bandwidth and minimise any disruptions.

If you have any queries please email

We look forward to seeing you.