The traffic operation of staggered intersections
The traffic operation of staggered intersections
The staggered intersections have widely been used in the U.K. in urban and rural areas. For more than half a century they have been recommended in the construction of new four-arm intersections and in the replacement of existing ones. The preference for this type of intersection rather than conventional crossroads is concerned with the high achievements in safety levels. Experiments have shown that the conversion of crossroads into staggered intersections reduces substantially the accident risks. Such a conversion, however, modifies the nature of the traffic stream interactions within the intersection and consequently affects the capacities and delays of minor road streams. A comprehensive literature review has shown that since these intersections were first recommended as an alternative layout for priority control, their traffic performance has been evaluated as if they operate identically on two separate T-junctions. The research described in this report examines this subject. Several particularities of these intersections have been investigated. The operational and geometric boundaries between crossroads, staggered intersection and T-junctions have been established, and approaches to determine such boundaries have been developed, calibrated and validated.
University of Southampton
De Andrade, Nilton Pereira
1991
De Andrade, Nilton Pereira
De Andrade, Nilton Pereira
(1991)
The traffic operation of staggered intersections.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
The staggered intersections have widely been used in the U.K. in urban and rural areas. For more than half a century they have been recommended in the construction of new four-arm intersections and in the replacement of existing ones. The preference for this type of intersection rather than conventional crossroads is concerned with the high achievements in safety levels. Experiments have shown that the conversion of crossroads into staggered intersections reduces substantially the accident risks. Such a conversion, however, modifies the nature of the traffic stream interactions within the intersection and consequently affects the capacities and delays of minor road streams. A comprehensive literature review has shown that since these intersections were first recommended as an alternative layout for priority control, their traffic performance has been evaluated as if they operate identically on two separate T-junctions. The research described in this report examines this subject. Several particularities of these intersections have been investigated. The operational and geometric boundaries between crossroads, staggered intersection and T-junctions have been established, and approaches to determine such boundaries have been developed, calibrated and validated.
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Published date: 1991
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Local EPrints ID: 461300
URI: http://eprints.soton.ac.uk/id/eprint/461300
PURE UUID: cd58dd2d-731a-490d-b92c-e51603f538ef
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Date deposited: 04 Jul 2022 18:42
Last modified: 04 Jul 2022 18:42
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Author:
Nilton Pereira De Andrade
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