MEASUREMENTS OF THE MACRO TEXTURE OF ROADS PART 1. TRIALS WITH THE CONTACTLESS SENSOR ON MOTORWAY M1

This report describes the first stage in a programme of work that is being carried out by TRRL with the object of developing a machine for the routine measurement of the macro-texture of road surfaces. It gives an account of a system, using a contactless sensor mounted in a moving vehicle, that has been used to measure the texture-depth of substantial lengths of motorway M1. The main findings of the study were as follows: (1) the system is capable of continuous texture measurements at speeds of at least 35 km/h. (2) The coefficient of variation of the averages of measurements obtained for 20-metre sub-section lengths of road was estimated to be about 5 percent. (3) The system provides a ready means of assessing the texture of large road networks, and so will assist in the setting of specification limits as well as providing a means of checking compliance. (4) The approximately 200 km length of motorway studied was found to have half of its length with a sand-patch equivalent texture depth of above 1.3 mm and only just over one percent below 0.5 mm. (Author/TRRL)

• Record URL:
  http://arrbknowledge.com
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00050164
• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • Hosking, J R
  • STILL, P B
• Publication Date: 1979

Media Info

• Features: Figures; Photos; References;
• Pagination: 9 p.
• Serial:
  • Australian Road Research
  • Publisher: ARRB
  • ISSN: 0005-0164

Subject/Index Terms

• TRT Terms: Accuracy; Compliance; Depth; Field tests; Freeways; Macrotexture; Measurement; Measuring instruments; Pavements; Sensors; Size; Specifications; Surface course (Pavements); Texture
• Uncontrolled Terms: Macro
• Geographic Terms: United Kingdom
• ITRD Terms: 178: Compliance (specif); 6499: Depth; 9041: Macro; 6136: Measurement; 2752: Motorway; 3061: Sand patch method; 6120: Sensor; 177: Specifications; 3053: Surface texture; 8119: United Kingdom
• Subject Areas: Highways; Pavements; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00310111
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Report/Paper Numbers: SR498 Monograph
• Files: ITRD, TRIS
• Created Date: Jun 9 1980 12:00AM