Title: Recent progress in activity-based travel demand modeling

Speaker: Prof. Seheon Kim (Hanbat National Univ.)

Date and Time: Nov. 7th (Thurs.), 4 pm – 5:30 pm

Venue: Room L409

Abstract:

Despite the clear theoretical advantages of activity-based models over trip-based models in transportation

demand modeling, their adoption in transportation planning practice has been slow. Based on the axiom that

transportation demand is derived from activities, activity-based demand models have gradually evolved over

the past 40 years, focusing more on academic development than on practical application. This limited adoption

is due to several factors: the complex structure compared to traditional four-step trip-based models, a lack

of standardized modeling practices, conservatism among transportation practitioners and institutions, and

limited technical resources. While the Fourth Industrial Revolution brings disruptive technological innovations

such as autonomous driving, shared mobility, and urban air mobility to the transportation field, the analytical

tools for examining increasingly complex travel behaviors remain reliant on traditional methods. However,

a growing demand for evidence-based decision-making, along with more sophisticated data in both quantity and

quality, is prompting a renewed focus on activity-based transportation demand models. This presentation will

review research trends and case studies related to activity-based models and propose future directions for

their development.