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TECHNICAL PAPERS
Jun 1, 2005

Modeling Operating Speed and Speed Differential on Two-Lane Rural Roads

Authors: P. Misaghi [email protected] and Y. Hassan, M.ASCE [email protected]Author Affiliations
Publication: Journal of Transportation Engineering
Volume 131, Issue 6
https://doi.org/10.1061/(ASCE)0733-947X(2005)131:6(408)
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Abstract

The geometric features of a highway network play a significant role considering the fact that collisions occur disproportionately on horizontal curves. Based on extensive literature review, the problem mainly stems from the lack of geometric design consistency–conformance of highway geometric characteristics with drivers’ expectations. More specifically, drivers select their speeds according to their own perception of the road (referred to as the operating speed) rather than the designer’s perception (referred to as the design speed). To address operating speed consistency evaluation in Canada, two sets of models for speed behavior were examined based on speed data collected using traffic counters/classifiers on 20 curves on two-lane rural highways in Ontario. Relatively weak relationships were developed for the traditional operating speed on horizontal curves, while stronger relationships were found for the 85th percentile speed differential from a tangent to a curve. It was also shown that the nonintrusive approach for speed data collection might reveal different speed behavior than that observed using radar guns.

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Acknowledgments

Financial support for this study was provided by the Natural Science and Engineering Research Council of Canada and Transport Canada. Equipment used in the study was acquired through funding by the Canada Foundation for Innovation and Ontario Innovation Trust. The writers would like to thank D. Edwards, B. Boutilier (MTO Eastern District Office), and L. Bender (SDG County) for their assistance in data collection.
Table 3. Appendix: Previously Developed Speed Prediction Models
AuthorVehicle typeModel; Coefficient of determination
Taragin (1954)PC V85=88.87−2,554.76R;0.860
McLean (1978)PC V85=101.2−0.0675CCR=101.2−2,730R;0.870
McLean (1979)PC V85=53.80+0.464VF−3,260R+85,000R2;0.920
Kerman et al. (1982)PC V85=Va−Va3398R;0.910
Guidelines for the design of roads (1984)PC V85=60+39.70e−0.00358CCR[LW=3.5m] ; 0.790
Glennon et al. (1986)PC V85=103.96−(4,524.94∕R) ; 0.840
Setra (1986)PC V85={102∕1+346∕[(57,300∕CCR)−1.5]} ; N/A
Lamm and Choueiri (1987)PC V85=88.72−0.084CCR[LW=3.0m] ; 0.846
V85=89.55−(2,862.69∕R)[LW=3.0m] ; 0.753
V85=92.69−0.080CCR[LW=3.3m] ; 0.731
V85=93.83−(2,955.40∕R)[LW=3.3m] ; 0.746
V85=95.77−0.076CCR[LW=3.6m] ; 0.836
V85=96.15−(2,803.70∕R)[LW=3.6m] ; 0.824
V85=94.39−(3,188.57∕R)=93.85−0.045CCR ; 0.787
V85=55.84−(2,809.32∕R)+0.634LW+0.053SW+0.0004AADT ; 0.842
Kanellaidis et al. (1990)PC V85=109.09−(3,837.55∕R) ; 0.647
   V85=32.20+0.839Vd+(2,226.9∕R)−(5,33.6∕R) ; 0.925
   V85=129.88−(6,23.1∕R) ; 0.777
Lamm (1993)PC V85=(106∕8,270+7.20CCR) ; 0.730
Ottesen and Krammes (1994)PC V85=103.04−0.0477CCR=103.70−(3,403∕R) ; 0.800
Morrall and Talarico (1994)PC V85=e(4.561−0.00586DC) ; 0.631
Islam and Seneviratne (1994)PC V85=95.41−1.48DC−0.012(DC)2[point of curve] ; 0.990
V85=103.30−2.41DC−0.029(DC)2[middle of curve] ; 0.980
V85=96.11−1.07DC[point of tangency] ; 0.980
Krammes et al. (1995)PC V85=103.66−1.95DC ; 0.800
V85=102.45−1.57DC+0.0037LC−0.10DF ; 0.820
V85=41.62−1.29DC+0.0049L−0.12DF+0.95VT ; 0.900
Lamm et al. (1995c)PC V85=(106∕10,150.1+7.676CCR) ; 0.810
Choueiri et al. (1995)PC V85=91.03−0.050CCR ; 0.810
Al-Masaeid et al. (1995)PC, LT, HT ΔV85PC=3.64+1.78DC ; 0.510
ΔV85LT=2.00DC ; 0.690
ΔV85T=4.32+1.44DC ; 0.420
ΔV85ALL=3.30+1.58DC ; 0.620
ΔV85ALL=1.84+1.39DC+4.39Pcon+0.07G2 ; 0.770
ΔV85ALL=(5,081∕R2)−(5,081∕R1)[continuous curves] ; 0.810
ΔV85ALL=108.30−(3,498∕LT)−0.71[(DF1×DF2)∕(DF1+DF2)][common tangents] ; 0.720
Voigt (1996)PC V85=99.61−(2,951.37∕R) ; 0.840
Abdelwahab et al. (1998)PC ΔV85=0.9433DC+0.0847DF ; 0.920
Pasetti and Fambro (1999)PC V85=103.90−(3,020.50∕R) ; 0.680
Fitzpatrick et al. (2000)PC V85=106.30−(3,595.29∕R)[HC:0⩽G<4,orHC+sagVC] ; 0.920
   V85=96.46−(2,744.49∕R)[HC:4⩽G<9] ; 0.560
   V85=100.87−(2,720.78∕R)[HC:−9⩽G<0] ; 0.590
   V85=101.90−(3,283.01∕R)[HC+LSDcrestVC] ; 0.780
   V85=111.07−(175.98∕K)[LSDcrestVC] ; 0.540
   V85=100.19−(126.07∕K)[HT+sagVC] ; 0.680
Ottesen and Krammes (2000)PC V85=102.44−1.57DC−0.012LC−0.01DC×LC ; 0.810
Andueza (2000)PC V85=98.25−(2,795∕R)−(894∕Ra)+7.486DC+9.308LT[horizontal curve] ; 0.840
V85=100.69−(3,032∕R)+27.819LT[tangent] ; 0.850
McFadden and Elefteriadou (2000)PC 85MSR=−14.90+0.144V85T−(954.55∕R)+0.0153LT ; 0.712
85MSR=−0.812+(998.19∕R)+0.017LT ; 0.603
Gibreel et al. (2001)PC V85S1=91.81+0.010R+0.468LV−0.006G13−0.878ln(A)−0.826ln(L0)[AT,sag] ; 0.980
   V85S2=47.96+7.216ln(R)+1.534ln(LV)−0.258G1−0.653A+0.02eE−0.008L0[BC,sag] ; 0.980
   V85S3=76.42+0.023R+0.00023K2−0.008eA+0.062eE−0.00012L02[MC,sag] ; 0.940
   V85S4=82.78+0.011R+2.068ln(K)−0.361G2+0.036eE−0.00011L02[EC,sag] ; 0.950
   VS5=109.45−1.257G2−1.586ln(L0)[DT,sag] ; 0.790
   V85C1=82.29+0.003R−0.05ΔC+3.441ln(LV)−0.533G1+0.017eE−0.000097L02[AT,crest] ; 0.940
   V85C2=33.69+0.002R+10.418ln(LV)−0.544G1+[8.699∕ln(1+A)]+0.032eE−0.011L0[BC,crest] ; 0.970
   V85C3=26.44+0.251R+10.381ln(LV)−0.423G1+[6.462∕ln(1+A)]+0.051eE−0.028L0[MC,crest] ; 0.980
   V85C4=74.97+0.292R+3.105ln(K)−0.85G2+0.026eE−0.00017L02[EC,crest] ; 0.900
   V85C5=105.32−0.418G2−0.123L0[DT,crest] ; 0.830
Jessen et al. (2001)PC V85=86.80+0.297VP−0.614G1−0.00239ADT[LSD] ; 0.540
V85=72.10+0.432VP−0.00212ADT[NLSD] ; 0.420
Donnell et al. (2001)Trucks V85(1)=56.1+0.117R−1.15G1+0.006LT1−0.000097(LT1)(R) ; 0.613
V85(2)=78.4+0.0140R−1.40G2−0.00724LT2 ; 0.562
V85(3)=75.1+0.0176R−1.48G2−0.00836LT2 ; 0.600
V85(4)=74.5+0.0176R−1.69G2−0.00810LT2 ; 0.611
V85(5)=83.1−2.08G2−0.00934LT2 ; 0.577

References

Abdelwahab, W. M., Aboul-Ela, M. T., and Morrall, J. F. (1998). “Geometric design consistency based on speed change on horizontal curves.” Road Transport Res., 127(1), 13–23.
Google Scholar
Al-Masaeid, H. R., Hamed, M., Aboul-Ela, M., and Ghannam, A. G. (1995). “Consistency of horizontal alignment for different vehicle classes.” Transportation Research Record, 1500, Transportation Research Board, Washington, D.C., 178–183.
Google Scholar
Andueza, P. J. (2000). “Mathematical models of vehicular speed on mountain roads.” Transportation Research Record, 1701, Transportation Research Board, Washington, D.C., 104–110.
Google Scholar
Choueiri, E. M., Lamm, R., Choueiri, B. M., and Choueiri, G. M. (1995). “An international investigation of road traffic accidents.” Proc., Conf. Road Safety in Europe and Strategic Highway Research Program (SHRP), Lille, France, VTI Konferens, No.2A, Part 1, 67–98.
Google Scholar
Donnell, E. T., Ni, Y., Adolini, M., and Elefteriadou, L. (2001). “Speed prediction models for trucks on two-lane rural highways.” Transportation Research Record, 1751, Transportation Research Board, Washington, D.C., 44–55.
Google Scholar
Easa, S. M. (2002). Geometric design guide update: design consistency assessment methodologies—revised ‘design consistency’ chapter of the TAC design guide, Transportation Association of Canada, Ottawa.
Google Scholar
Fitzpatrick, K., et al. (2000). “Speed prediction for two- lane rural highways.” Final Rep. FHWA-RD-99-171, Mclean, Va.
Google Scholar
Geometric design guide for Canadian roads. (1999). Transportation Association of Canada, Ottawa.
Google Scholar
Gibreel, G., Easa, S. M., and Al-Dimeery, I. A. (2001). “Prediction of operating speed on three-dimensional highway alignments.” J. Transp. Eng., 127(1), 21–30.
Crossref
Google Scholar
Gibreel, G. M., Easa, S. M., Hassan, Y., and El-Dimeery, I. A. (1999). “State of the art of highway geometric design consistency.” J. Transp. Eng., 125(4), 305–313.
Crossref
Google Scholar
Glennon, J. C., Neuman, T. R., and Leisch, J. E. (1986). “Safety and operational considerations for design of rural highway curves.” Rep. No. FHWA/RD-86/035, Federal Highway Administration, Mclean, Va.
Google Scholar
Guidelines for the design of roads (RAS-L-1). (1984). German Road and Transportation Research Association, Berlin.
Google Scholar
Hassan, Y. (2003). “Traffic and speed characteristics on two-lane highways: Field study.” Can. J. Civ. Eng., 30(6), 1042-1054.
Crossref
Google Scholar
Hassan, Y., Gibreel, G. M., and Easa, S. M. (2000). “Evaluation of highway consistency and safety: practical application.” J. Transp. Eng., 126(3), 193–201.
Crossref
Google Scholar
Hirsh, M. (1987). “Probabilistic approach to consistency of highway alignment.” J. Transp. Eng., 113(3), 268–276.
Crossref
Google Scholar
Islam, M. N., and Seneviratne, P. N. (1994). “Evaluation of design consistency of two-lane rural highways.” ITE J., 64(2), 28–31.
Google Scholar
Jessen, D. R., Schurr, K. S., McCoy, P. T., Pesti, G., and Huff, R. R. (2001). “Operating speed prediction on crest vertical curves of rural two-lane highways in Nebraska.” Transportation Research Record, 1751, Transportation Research Board, Washington, D.C., 67–75.
Google Scholar
Kanellaidis, G., Golias, J., and Efstathiadis, S. (1990). “Drivers’ speed behaviour on rural road curves.” Traffic Eng. Control, 31(7/8), 414–415.
Google Scholar
Kerman, J. A., McDonald, M., and Mintsis, G. A. (1982). “Do vehicles slow down on bends? A study into road curvature, driver behaviour and design.” Proc., 10th Summer Annual Meeting, PTRC, 57–67.
Google Scholar
Krammes, R. A. (2000). “Design speed and operating speed in rural highway alignment design.” Transportation Research Record, 1701, Transportation Research Board, Washington, D.C., 68–75.
Google Scholar
Krammes, R. A., Rao, K. S., and Oh, H. (1995). “Highway geometric design consistency evaluation software.” Transportation Research Record, 1500, Transportation Research Board, Washington, D.C., 19–24.
Google Scholar
Lamm, R., and Choueiri, E. M. (1987). “Recommendations for evaluating horizontal design consistency based on investigations in the State of New York.” Transportation Research Record, 1122, Transportation Research Board, Washington, D.C., 68–78.
Google Scholar
Lamm, R., Psarianos, B., Drymalitou, D., and Soilemezglou, G. (1995). Guidelines for the design of highway facilities, Vol. 3, Ministry for Environment, Regional Planning and Public Works, Athens, Greece.
Google Scholar
McFadden, J., and Elefteriadou, L. (2000). “Evaluating horizontal alignment design consistency of two-lane rural highways: Development of new procedure.” Transportation Research Record, 1737, Transportation Research Board, Washington, D.C., 9–17.
Google Scholar
McLean, J. (1978). “Speeds on curves: Regression analysis.” Internal Rep. No. 200-3 to the Australian Road Research Board, Australia.
Google Scholar
McLean, J. (1979). “An alternative to the design speed concept for low speed alignment design.” Transportation Research Record, 702, Transportation Research Board, Washington, D.C., 55–63.
Google Scholar
Misaghi, P. (2003). “Modeling operating speed and speed differential for design consistency evaluation.” MSc thesis, Carleton Univ., Ottawa.
Google Scholar
Morrall, J., and Talarico, R. J. (1994). “Side friction demanded and margins of safety on horizontal curves.” Transportation Research Record, 1435, Transportation Research Board, Washington, D.C., 145–152.
Google Scholar
Nicholson, A. (1998). “Superelevation, side friction, and roadway consistency.” J. Transp. Eng., 124(5), 411–418.
Crossref
Google Scholar
Ontario traffic manual - Book 7: Temporary conditions. (2001). Ministry of Transportation of Ontario, St. Catharines, Ontario, Canada.
Google Scholar
Ottesen, J. L., and Krammes, R. A. (1994). “Speed profile model for a u.s. Operating speed - based consistency evaluation procedure.” Proc., 73rd Annual Meeting of the Transportation Research Board, Washington, D.C.
Google Scholar
Ottesen, J. L., and Krammes, R. A. (2000). “Speed profile model for a design consistency evaluation procedure in the United States.” Transportation Research Record, 1701, Transportation Research Board, Washington, D.C., 76–85.
Google Scholar
Passetti, K. A., and Fambro, D. B. (1999). “Operating speeds on curves with and without spiral transitions.” Transportation Research Record, 1658, Transportation Research Board, Washington, D.C., 9–16.
Google Scholar
Setra, D. (1986). “Vitesses pratiquées et geometric de la Route.” Note d’ Information B-C 10, Ministère de l’ Equipment, du Logement, de l’ Aménagement du Territoire et des Transports, France.
Google Scholar
Taragin, A. (1954). “Driver performance on horizontal curves.” Proc., 33rd Annual Meeting of the Highway Research Board, National Research Council, Washington, D.C., 446–466.
Google Scholar
Transport Canada. (2003). “Transportation in Canada 2003.” Annual Rep. No. TP13198E, Ottawa.
Google Scholar
Voigt, A. P. (1996). “An evaluation of alternative horizontal curve design approaches for rural two-lane highways.” Research Rep. No. 04690-3, Texas Transportation Institute (TTI), Texas A&M Univ., College Station, Tex.
Google Scholar

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Go to Journal of Transportation Engineering
Journal of Transportation Engineering
Volume 131 • Issue 6 • June 2005
Pages: 408 - 418

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© 2005 ASCE.

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Received: Oct 20, 2003
Accepted: May 25, 2004
Published online: Jun 1, 2005
Published in print: Jun 2005

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P. Misaghi [email protected]
MASc Graduate, Dept. of Civil and Environmental Engineering, Carleton Univ., Ottawa, ON, Canada K1S 5B6. E-mail: [email protected]
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Y. Hassan, M.ASCE [email protected]
Associate Professor, Dept. of Civil and Environmental Engineering, Carleton Univ., Ottawa, ON, Canada K1S 5B6. E-mail: [email protected]
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