Communities and Collections

Operating speed models for tangent segments on urban roads

  • Author(s) / Creator(s)
  • Information about operating speeds is essential to design better roads, model traffic emissions, ensure design consistency while maintaining efficient and safe operations on our roads. Therefore, understanding how different factors affect operating speeds and developing operating speed prediction models is a critical research issue. Many studies have developed such models on rural roads and highways, but only a few studies have considered developing such models on urban roads, and fewer yet on tangential segments. Therefore, this paper attempts to address the abovementioned limitations by developing operating speed models using data from 249 tangential road segments in the City of Edmonton, Canada. The paper develops a Generalized Linear Model using panel data with the primary aim of exploring the relationships between operating speeds on urban roads and features of the road environment. In order to study the impact of road elements on different road types, three models were created: one including arterial and collector locations combined and two other models for arterial and collector roads separately. The results revealed that roads with sidewalks that were farther away from the road and with low object density and/or tree density were all associated with higher operating speeds. Locations with monolithic walk on both sides of the road had the lower operating speeds. Furthermore, operating speeds decreased as access increased while longer road had higher operating speeds. One major takeaway was that the elements differed between road classes. The two variables, which stood out in that respect, were medians and bus stops.

  • Date created
  • Subjects / Keywords
  • Type of Item
    Article (Published)
  • DOI
  • License
    Attribution-NonCommercial 4.0 International