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)

• Corporate Authors:

  Thomas Telford Limited

  London,   United Kingdom 
• Authors:
  • KLYNE, M
• Conference:
  • PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS: MUNICIPAL ENGINEER
• Publication Date: 1998-12

Language

• English

Media Info

• Features: References;
• Pagination: p. 170-3
• 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