Estimating the impact of incidents on urban controlled-access highways: an empirical analysis
Date
2017
Type:
Artículo
item.page.extent
item.page.accessRights
item.contributor.advisor
ORCID:
Journal Title
Journal ISSN
Volume Title
Publisher
item.page.isbn
item.page.issn
item.page.issne
item.page.doiurl
item.page.other
item.page.references
Abstract
An empirical analysis is developed that quantifies the impact of different types of traffic incidents on the speed and maximum flow averages of vehicles on a controlled-access highway. The incident types considered include damage to highway infrastructure, vehicle rollover, crashes (into stationary objects), collisions (with moving vehicles), rain, fog, vehicle breakdowns, pedestrians on roadway, etc. Using real-world data from Chile’s most heavily used urban motorway/freeway, estimates of incident impacts on speed are generated using a multiple linear regression model incorporating instrumental variables to correct for endogeneity. Flow results are then generated using the fundamental traffic equation relating speed, flow and density. A ranking of the impacts on highway traffic of the different incident types based on incident frequency as well as impact size demonstrates that for the real case studied, the incidents with the greatest cumulative effect are (in order of magnitude) vehicle breakdown, collisions and rain.
Description
item.page.coverage.spatial
item.page.sponsorship
Citation
Louis de Grange & Rodrigo Troncoso & Nicolás Odeh & Felipe González, 2017. "Estimating the impact of incidents on urban controlled-access highways: an empirical analysis," Applied Economics, Taylor & Francis Journals, vol. 49(18), pages 1763-1773, April.
Keywords
Traffic incidents, Density, Speed, Maximum flow, Highway capacity, Accidents, Vehicle breakdown, Collision, Rain, Instrumental variables, Endogeneity