THE EFFECT OF EDGE LINING ON VEHICLE SPEEDS THROUGH ROUNDABOUTS AND MID-BLOCK BLISTERS
Traffic calming is generally understood to be the use of self-enforcing road engineering measures in a street. It is primarily the introduction of one or several devices with substandard horizontal and/or vertical alignment geometry in an otherwise high-standard facility capable of accommodating high vehicle speeds. In most cases it is the change in the horizontal and/or vertical road alignment which reduces the speed of the motor vehicle. In accommodating a 'design vehicle' to traverse a roundabout or mid-block blister, the resultant pavement widths and geometry are such that passenger vehicles can transverse the device at higher speeds. If the design vehicle happens to be a bus or fire appliance, the effectiveness of the device in reducing the speed of passenger vehicles is substantially less. The painting of a textured 'edge line' to artificially increase the size of the central island causes a larger number of drivers to select a wider travel path, thereby further reducing vehicle speeds through the device. (A)
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Corporate Authors:
Thomas Telford Limited
London, United Kingdom -
Authors:
- KLYNE, M
- Conference:
- Publication Date: 1998-12
Language
- English
Media Info
- Features: References;
- Pagination: p. 170-3
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Serial:
- Volume: 127
- Issue Number: 4
Subject/Index Terms
- TRT Terms: Layout; Road markings; Roundabouts; Speed control; Traffic control; Traffic restraint
- ITRD Terms: 562: Carriageway marking; 2885: Layout; 438: Roundabout; 2833: Speed control (struct elem); 654: Traffic control; 633: Traffic restraint
- Subject Areas: Highways; Operations and Traffic Management;
Filing Info
- Accession Number: 00765596
- Record Type: Publication
- Source Agency: Transport Research Laboratory
- Files: ITRD, ATRI
- Created Date: Jul 1 1999 12:00AM