Research Project

Development of Transportation Planning Information for the Chicago Region Using the Longitudinal Employer-Household Dynamics (LEHD) Data

Conduct an evaluation of the Longitudinal Employer-Household Dynamics (LEHD) Data for the Chicago region as an alternative (to CTPP) data source for transportation planning.

Principal Investigator
Metaxatos, Paul
Research Area(s)
Data Development
Siim Sööt, Ashish Sen
Funding Source
Illinois Department of Transportation(IDOT), Metropolitan Transportation Support Initiative (METSI)


The purpose of this research is to conduct comparisons between LEHD and CTPP regarding trip productions, trip attractions and origin-destination flows at different levels of geography. The following case study has been completed. Over the last several decades the increase in household vehicles and the number of jobs has outpaced the growth in population in the Chicago area. These two trends have increasingly added to the amount of congestion during the peak periods and have directly contributed to increasing travel times to work. This case study will explore some of the factors that have contributed to rather divergent short-term travel-time trends in the Chicago area.  We will do this by using the LEHD (On the Map) data and in the process reflect on the utility of the LEHD data for commuting studies and, more generally, regional transportation planning. A report or paper from this research is not immediately available.