TRB Pubsindex
Text Size:
x

« Prev Next »

Return to Results | New Search

Bookmark and Share

Title:

Operating Speed of Sport Cyclists on Two-Lane Rural Roads
Cover of Operating Speed of Sport Cyclists on Two-Lane Rural Roads

Accession Number:

01623037

Record Type:

Component

Abstract:

Sport and leisure activities are behind significant bicycle traffic volumes on Spanish two-lane rural roads. The difference between motor vehicle and bicycle speeds may be among the causes of the high severity of cyclist accidents, which caused 54 deaths in Spain in 2014 only in rural environments. There was no previous research on the relationship between the infrastructure (horizontal and vertical alignment) and the speed of sport cyclists.This study instrumented 10 racing bicycles with high definition (HD) mini-cameras equipped with global positioning system (GPS). Cameras where attached to seat-posts, focusing the rear part of the bicycle. Position and speed were recorded at a 1 Hz frequency. The cyclists belong to a cycling club of Valencia (Spain). They performed two stages on two different weekends. Authors did not make any specific modification to cyclists’performance, apart from the installation of cameras. Therefore, naturalistic data of around 60 hours was obtained. Results of this research were mainly speed profiles (instant speed along road segments) for a sample of 10 bicycles. Plots for comparing speed distribution with horizontal alignment (curves) and vertical alignment (gradient) were obtained as well.Models to predict the speed mean and its distribution were proposed.The higher speed and its higher deviation were found on downhills, where the influence of horizontal alignment was quite significant. Curves with low radius and high deflection angle concentrated speed reductions and opposing lane invasions. On level terrain or uphill segments, the presence of curves did not affect much the speed, being gradient the main factor.

Supplemental Notes:

This paper was sponsored by TRB committee ANF20 Standing Committee on Bicycle Transportation.

Monograph Accession #:

01618707

Report/Paper Numbers:

17-00961

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Torres, Sergio
LLorca, Carlos
Garcia, Alfredo

Pagination:

18p

Publication Date:

2017

Conference:

Transportation Research Board 96th Annual Meeting

Location: Washington DC, United States
Date: 2017-1-8 to 2017-1-12
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Geographic Terms:

Valencia (Spain)

Subject Areas:

Data and Information Technology; Highways; Operations and Traffic Management; Pedestrians and Bicyclists

Source Data:

Transportation Research Board Annual Meeting 2017 Paper #17-00961

Files:

PRP, TRIS, TRB, ATRI

Created Date:

Dec 8 2016 10:15AM