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3 results on '"TRAFFIC engineering"'

1. IMPORTANCIA DE LA MANIOBRA DE ADELANTAMIENTO EN CARRETERAS DE DOS CARRILES.

Author

Pineda Uribe, Beatriz Elena

Subjects
*ROAD visibility, *TRAFFIC engineering, *HIGHWAY engineering, *TRAFFIC regulations, *TRAFFIC surveys, *HIGHWAY capacity
Abstract

The presence or absence of the necessary road sections with visibility distance passing on a two-lane road, affects the quality of traffic flow as it affects the capacity, the level of service, accident and operating speed. Therefore, it is very important that a two-lane road has sections with passing sight distance, equally important is also the formula that indicates how many running meters are needed to perform the maneuver safely and the procedure to be performed to the geometric design planes to the determine the road sections in which there is this distance. In considering the formulations that calculate this distance, there are many variables, of which it is necessary to emphasize on some variables and let other variables fixed, taking conditions in which there is no influence of these. That is why data were taken from the maneuver in which a car passing another car, how many seconds of data used by drivers to overtake in places where other variables such as the slope of the road are not of great importance, because very small. It also discusses Colombian regulations related to the topic. [ABSTRACT FROM AUTHOR]

Published
2011

2. La evolución de los nudos viarios en España. Una guía para el diseño de nudos viarios.

Author

ROCCI, Sandro

Subjects
*HIGHWAY engineering, *ROAD construction, *TRAFFIC circles, *ROAD interchanges & intersections, *TRAFFIC engineering, *VEHICLE design & construction
Abstract

The rules for designing highway junctions (intersections, interchanges and roundabouts) in Spain since the 'sixties are reviewed. These rules have been scant for the big development in highway construction in the same period. A des-cription is given of the development of the Guidelines for Highway Junctions, which have been introduced by a Circular Order of the Highways General Directorate in December, 2012: an endeavor of no small scope. The author of this article has acted as main Rappor-teur for its text. A description follows of the aim guiding the text of this new Guide, which strives to state the degree of binding carried by each of its provisions. The importance of operation is also stressed, human factors and driving aids; the latter must be taken into considerations from the very inception of the design. Two levels-of-service and seven design vehicles have been used as design criteria. The operation of the junction has been taken into account in detail, including interactions between contiguous junctions and the needs of special users (heavy goods vehicles, vulnerable users and transit). Starting from an analytical approach, a set of possible functional morphologies has been syn-thetized; and a method has been established for selecting the most suitable junction for a given case. Some details of the Guide, which are a relative novelty, are also examined. [ABSTRACT FROM AUTHOR]

Published
2013

3. Propuesta de un nuevo modelo para la determinación de los niveles de servicio en autopistas para la gestión dinámica del tráfico.

Author

BELDA ESPLUGUES, Enrique, TOMÁS LÓPEZ, Vicente R., GOMAR, Ruth, SÁEZ, Arturo, and CARMONA, Diego

Subjects
*TRAFFIC engineering, *ROAD safety measures, *INTELLIGENT transportation systems, *HIGHWAY engineering, *TRANSPORTATION engineering
Abstract

The application of new technologies to traffic engineering has allowed the development of Intelligent Transport Systems. ITS improve traffic management and increase road safety optimizing the use of the existing road infrastructure. ITS systems make easy traffic dynamic management. One of most used parameters in traffic management is the Level of Service. Currently, Level of Service are based on the Highways Capacity Manual from Transportation Research Board. However, the proposed model is completely static. Thus, this model is considered suitable for the dimensioning of future road network, but not for dynamic traffic management. This paper presents a new model for the identification of level of service in highways that allows a dynamic traffic management in real time. This model is based on the fundamental relation between speed and occupancy. [ABSTRACT FROM AUTHOR]

Published
2013

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