Drivers’ understanding of temporary and permanent slippery road signage
This project aimed to assist the development of understandable, cost-effective static signage to warn drivers of the potential for lower skid resistance in areas renowned for periodic slippery conditions. The research began with a literature review in which the features influencing road signage effectiveness, in terms of both conspicuity and comprehension, were identified. Based on these findings, alternative signage designs were developed and investigated in relation to the current SRS signage through a public focus group followed by an expert focus group. The outcomes of this process led to the selection of two alternative supplementary plates to be used with the main plate. These signs were constructed to the temporary signage design specifications and compared to the current temporary SRS signage (which consists of a main plate only) in an on-road trial. Metrocounters measured the free vehicle speed associated with each of the signs at three different curves in both wet and dry conditions. In dry conditions the signs made no practical difference to vehicle speed; however, in wet conditions the presence of a sign resulted in both a significant and practical reduction in free vehicle speed in all three curves. Planned comparisons revealed the sign that led to the greatest reduction in free vehicle speed in the wet differed at each of the curves.
- Record URL:
-
Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/9781988512075
-
Corporate Authors:
New Zealand Transport Agency
Private Bag 6995, Wellington 6141, New Zealand
Wellington, -
Authors:
- Trotter, M
- Burton, J
- Jones, C
- Frith, B
- Thomas, J
- Publication Date: 2017-1
Media Info
- Pagination: 70p
-
Serial:
- Issue Number: 607
Subject/Index Terms
- TRT Terms: Behavior; Drivers; Focus groups; Friction; Highway curves; Perception; Speed control; Speed limits; Surface course (Pavements); Traffic signs; Warning signals; Wet weather
- Uncontrolled Terms: Safe systems (road users)
- Geographic Terms: New Zealand
- ATRI Terms: Curve; Driver behaviour; Focus group; Friction; Perception; Speed control; Traffic sign; Warning; Wet road
- ITRD Terms: 2872: Bend (road); 9113: Warning; 3015: Wet road
- Subject Areas: Highways; Safety and Human Factors; I83: Accidents and the Human Factor;
Filing Info
- Accession Number: 01627494
- Record Type: Publication
- Source Agency: ARRB
- ISBN: 9781988512075
- Files: ITRD, ATRI
- Created Date: Feb 27 2017 12:24PM