Influence of Vertical Alignment on Horizontal Curve Perception: Phase II: Modeling Perceived Radius
Abstract
Phase I of a study established that perception of horizontal curvature depends on the overlapping vertical alignment. A horizontal curve radius will be perceived incorrectly if the curve overlaps with a crest or sag vertical curve. Phase II quantified the extent of such erroneous perception. An experiment involving a three-dimensional static presentation was carried out to determine the mean value of perceived horizontal curve radius for different sets of alignment parameters. The results of the experiment were analyzed statistically to examine the effects of the alignment parameters on the perceived radius. The parameters that were found to significantly affect the perceived radius were the type of overlapping vertical curve, actual radius, and turning direction (on crest and sag curves) and sight distance (on sag curves). In addition, simple statistical models were developed using regression analysis to estimate the perceived radius of any horizontal curve in a combined alignment.
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References
1. Smith B. L., and Lamm R. Coordination of Horizontal and Vertical Alinement with Regard to Highway Esthetics. In Transportation Research Record 1445, TRB, National Research Council, Washington, D.C., 1994, pp. 73–85.
2. Hassan Y., and Easa S. M. Effect of Vertical Alignment on Driver’s Perception of Horizontal Curves. Journal of Transportation Engineering, American Society of Civil Engineers, 2002 (forthcoming).
3. Gibreel G., Easa S. M., and Al-Dimeery I. A. Prediction of Operating Speed on Three-Dimensional Highway Alignments. Journal of Transportation Engineering, American Society of Civil Engineers, Vol. 127, No. 1, 2001, pp. 21–30.
4. Krammes R. A., Brackett R. Q., Shafer M. A., Ottesen J. L., Anderson I. B., Fink K. L., Collins K. M., Pendleton O. J., and Messer C. J. Horizontal Alignment Design Consistency for Rural Two-Lane Highways. Report RD-94-034. FHWA, U.S. Department of Transportation, 1995.
5. Morrall J. F., and Talarico R. J. Side Friction Demanded and Margins of Safety on Horizontal Curves. In Transportation Research Record 1435, TRB, National Research Council, Washington, D.C., 1994, pp. 145–152.
6. Lamm R., and Choueiri E. M. Recommendations for Evaluating Horizontal Design Consistency Based on Investigations in the State of New York. In Transportation Research Record 1122, TRB, National Research Council, Washington, D.C., 1987, pp. 68–78.
7. Hassan Y., and Easa S. M. Design of Sag Vertical Curves in Three-Dimensional Alignments. Journal of Transportation Engineering, American Society of Civil Engineers, Vol. 124, No. 1, 1998, pp. 52–58.
8. Hassan Y., Easa S. M., and Abd El Halim A. O. Design Considerations for Combined Highway Alignments. Journal of Transportation Engineering, American Society of Civil Engineers, Vol. 123, No. 1, 1997, pp. 60–68.
9. Hassan Y., Gibreel G. M., and Easa S. M. Evaluation of Highway Consistency and Safety: Practical Approach. Journal of Transportation Engineering, American Society of Civil Engineers, Vol. 126, No. 3, 2000, pp. 193–201.
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Article first published: January 2002
Issue published: January 2002
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