Project leaders

• Guillaume Chapelle (LIEPP, CY Cergy Paris Université)
• Morgan Ubeda (LIEPP, INRAE)

Project description

Conducted in partnership with the Société des Grands Projets, this project has two objectives. The first is to develop quantitative spatial economics (QSE) models, or models based on the Ahlfeldt-Redding-Sturm-Wolf approach, building on the latest work carried out by the LIEPP for the SGP. In particular, we propose to develop an urban equilibrium model that includes a detailed description of the housing market and to explore a variant with congestion. Secondly, data work to measure land regulation and study its interactions with transport infrastructure. This work should make major contributions in two key areas.

The study of integrated models for evaluating transport policies

• Compare the results of a QSE model with road congestion to the predictions of specialized traffic models.
• Calculate the predictions of QSE models on real estate prices and the location of jobs and households, to compare them with the LUTI (Land Use and Transport Interaction) models used previously.
• Study the role of heterogeneity in land supply, particularly regulations, in a quantitative model.

Study the interactions between urban planning regulations and transport infrastructure

• Provide data on land regulations and conduct econometric studies on the interactions between infrastructure and land regulations
• Assess building rights in station neighborhoods
• Assess the impact of the Grand Paris Express on local urban planning