The influence of installation geometry on light technical parameters has been investigated using computer design procedures. The main conclusions are: (1) in order to maintain the standard of lighting the luminaire spacing on curves must be decreased from that used on the straight section of road; (2) the closing up of spacing must be greater if the luminaires are placed on the inside of the curve rather than on the outside of the curve; and (3) a simple rule can be used to determine the curve spacing, based on the spacing used in the straight section and the radius of curvature of the curve. Implications to road safety and costs are discussed.
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References
1.
SAA.AS 1158 Public Lighting Code, Part 1 Lighting of urban traffic routes, Standards Association of Australia (1973).
2.
Van Bommel, W.J.M. and de Boer, J.B., Road Lighting (Philips Technical Library, 1980).
3.
Road traffic crashes in New South Wales, Traffic Authority , Sydney, Australia (1983 ).
4.
Fox, J.C., Good, M.C. and Joubert, P.N., Collisions with utility poles, Office of Road Safety, Dept. of Transport, Australia (1979).
5.
CIEPublication 12.2, Recommendations for the lighting of roads for motorized traffic, Commission Internationale de l'Eclairage (CIE) (1977).
6.
CIEPublication 30.2, Calculation and measurement of luminance and illuminance in road lighting, CIE (1982).
7.
Waldram, J.M., Street Lighting (Edward Arnold, London, 1952).
8.
Simpson, M.D., Lighting round the bend, Building Services, July (1983).
9.
IESLighting Handbook, Application Volume (IES of North America, New York , 1981).
10.
Hargroves, R.A. and Simons, R.H., Main road lighting-the new Code of Practice and its benefits, IPLE Journal (March 1983).
NZS 6701 Code of practice for road lighting , Standards Association of New Zealand ( 1983).
13.
Naasra, Interim guide to the geometric design of rural roads, National Association of Australian State Road Authorities (1980).
14.
Ten Brummelaar, T., Where are the kinks in the alignments? Transportation Research Record No. 556 (1975).
15.
Ten Brummelaar, T., The reversal point in the perspective road picture, Australian Road Research, 13 (2), (1983).
16.
Hall, R.R. and Fisher, A.J., Lighting of bends on urban traffic routes, School of Civil Engineering , University of New South Wales (1984 ).
17.
SAA, Draft Australian Standard (Public Review Document), SAA Public Lighting Code, Part 1 Performance and installation requirements , Standards Association of Australia ( 1984).
18.
Winer, B.J., Statistical Principles in Experimental Design ( McGraw Hill , 1971).
19.
Fisher, A.J. , Road lighting as an accident counter measure , Australian Road Research, 7 (4), (1977).
20.
Hall, R.R. and Fisher, A.J., Freeway lighting, Special Report 18, Australian Road Research Board (1979).
21.
SAA, AS 1798 Preferred dimensions for lighting columns and bracket arms, Standards Association of Australia (1975).
22.
Symons, N.R. and Cleal, P.M., Identification of hazardous roadside objects , Proceedings of the Australian Road Research Board, 11 (5), (1982).
23.
CiePublication 47, Road lighting for wet conditions, CIE (1979 ).
