Understanding speed selection behavior of drivers following speed limit increases is critically important. To date, the literature has largely focused on freeways and the effects of speed limit changes on two-lane highways remains under researched. Prior research has generally focused on changes to mean speeds, although the speeds of both the highest and lowest drivers are also of great interest. This study investigates trends in free-flow travel speeds following 2017 legislation that increased the posted speed limit from 55 to 65 mph on 943 mi of rural highways in Michigan. Speed data were collected for over 46,000 drivers at 67 increase segments where speed limit increased and 28 control segments where speed limits remained unchanged, before and during each of the two successive years following the speed limit increases. Site-specific traffic, geometric, and cross-sectional information was also collected. Impacts of the speed limit increases on the 15th, 50th, and 85th percentile speeds were evaluated using quantile regression. Separate analyses were conducted for passenger cars and heavy vehicles. Locations where the speed limits were raised experienced increases in travel speeds ranging from 2.8 to 4.8 mph. The control sites experienced marginal changes in speeds, which suggests that any spillover effects of the higher speed limits have been limited. Significant differences were observed across the quantiles with respect to the effects of the speed limit increases, as well as numerous site-specific variables of interest. The results provide important insights about the nature of driver speed selection and the impacts of speed limit increases.


    Zugriff

    Download

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Evaluating the Impacts of Speed Limit Increases on Rural Two-Lane Highways Using Quantile Regression


    Weitere Titelangaben:

    Transportation Research Record


    Beteiligte:


    Erscheinungsdatum :

    2021-07-07




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Speed Variability on Rural Two-Lane Highways

    Collins, Jon | Online Contents | 1999


    Speed Variability on Rural Two-Lane Highways

    Collins, Jon / Fitzpatrick, Kay / Bauer, Karin M. et al. | Transportation Research Record | 1999


    Speed Prediction for Two-Lane Rural Highways

    K. Fitzpatrick / L. Elefteriadou / D. W. Harwood et al. | NTIS | 2000


    Evaluating Effect of Operating Speed on Crashes of Rural Two-Lane Highways

    Fahmida Rahman / Xu Zhang / Mei Chen | DOAJ | 2023

    Freier Zugriff

    Speed-Profile Model for Two-Lane Rural Highways

    Fitzpatrick, Kay | Online Contents | 2000