Research Projects

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Research Projects

STATUS: Complete YEAR: 2016 TOPIC AREA: Public transit, land use, and urban mobility CENTER: METRANS UTC

Innovation on Job Accessibility with General Transit Feed Specification (GTFS) Data

Project Summary

Project number: MT-16-08

Funding Source: US DOT

Contract number: DTRT13-G-UTC57

Funding amount: $100,000

Performance period: 1/1/17 to 6/30/18


Link to full seminar video


Project description

This paper investigates job access in Los Angeles County via public transportation. We develop a measure of accessibility based on travel time, via transit, to jobs. We use open source General Transit Feed System (GTFS) data to model the transit network and interface with a variety of computing tools including JavaScript, ArcPy for ArcGIS and statistical packages to measure the number of jobs accessible from these tracts within a 60-minute commute time. The result is a method that leverages GTFS data to allow us to simulate job access with different transit investments. We measure transit job access from these tracts for three scenarios. Each scenario compares transit job access with completed or proposed additions to the Los Angeles Metro network relative to the status quo. We illustrate that job access measures can go beyond the common "static" measures of access over existing networks and be used to evaluate different transit investment scenarios. Our results suggest that the opening of the Expo Phase II light rail line increased job access in tracts that contain a higher percentage of opportunity youth populations and the opening of the proposed Crenshaw Extension promises to increase transit job access even further.


Research seminar highlights video


Gary Painter
Professor, Sol Price School of Public Policy
635 W. Downey Way, VPD 207
Los Angeles, CA 90089-3331
United States
[email protected]


Marlon Boarnet
Senior Associate Dean, Academic Affairs; Professor & Director of Graduate Programs in Urban Planning, Sol Price School of Public Policy
650 Childs Way
Ralph and Goldy Lewis Hall (RGL) 301CLos Angeles, CA 90089-0626
United States
[email protected]