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(Automatic translation)

Ratio of the distance between roundabouts in a metropolitan road and the comfort of the movement of users

Sergio Sanchez Garcia
Ingeniero Técnico de Obras Públicas
Superior Technician Occupational Health and Safety

Diego Sanz Abella
Ingeniero de Caminos, Canales y Puertos
Infrastructure Area Delegate in Aragon Research and Quality Control
Engineering Consultant Company INCOSA-

Miguel Angel Hueso Carera
Ingeniero de Caminos, Canales y Puertos
Section Chief road projects of CITMA (Ministry of Infrastructures,
Territory and the Environment)
Associate Professor of the UPV (Polytechnic University of Valencia)
Teaching unit of Roads and Airports


In this article will discuss the implementation of roundabouts on roads located in metropolitan or access to coastal environments, ie tourism, with a high volume of traffic and highly urbanized environments. The implementation of roundabouts was performed with pseudotécnicos criteria between them, so that administrations holders are adopted as distance between them from 400 2.000 meters to meters.

At present the introduction of new technologies such as GPS system has been fully imposed, such as application called RaceChrono installed on your mobile phone, which determines both the vehicle speed and the longitudinal and transverse movements thereof.

From the previous instrumentation CV 18 duplicate road, Park Road type, between the towns of Burriana and Almazora in the province of Castellon, regional ownership is analyzed. It is the typical metropolitan access road in summer also operates bus access to the neighboring stretches of coast. Has dual carriageway separated intersections with type 400 1.800 meters meters and roundabouts.

9 by testing passes the velocity profile of the sections studied is obtained, these sections are defined roundabout to roundabout, the same is done in the conditions of service level A, to explore on free speed.

From here a table indicating the times at speed obtained in each of the sections, obtained by linear regression the relationship between time and distance separation is obtained roundabouts. Finally from the times described you can establish criteria for park pathways called C-80, the minimum distance between intersections and the maximum distance, facing the future planning of similar roads.


Speed ​​profile, Roundabout, Traffic, Speed, Planning, Speed, GPS, RaceChrono, acceleration, braking, Metropolitan Highway.

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