Analyzing dynamic curve widening on forest roads

Abstract

Forest roads require important design specifications to ensure all-season access for various vehicles. Long and heavy log trucks can face serious maneuvering problems on forest roads due to insufficient amount of area to the left for road widening on horizontal curves. In order to provide safe and continuous shipment and transportation, appropriate curve widening areas should be provided for long vehicles along horizontal curves. In this study, a statistical model was developed to provide curve-widening solutions for long trucks (e.g., those with 18 wheels) considering various curve radius and deflection angles. The dynamic curve widening feature of Plateia 2013 program was employed to calculate curve widening for the specified vehicle. During the solution process, nine different horizontal curve diameters from 10 to 50 m (by 5 m intervals) and 17 different deflection angles from 90° to 170° (by 5° intervals) were evaluated to run horizontal curve-widening analysis. Using a multiple regression model, we made suitable predictions about curve widening. The curve-widening areas decrease as the horizontal curve radius increases, while increasing the deflection angle on horizontal curves increases curve widening areas. Clearly, the computer-based dynamic curve widening model developed in this study can be effectively used in determining optimum widening for horizontal curves by evaluating the number of alternatives that fit geometrical specifications and vehicle types.

Keywords

Forest roads / Log trucks / Curve widening area / Dynamic driving analysis

References

[1] Abeli WS, Meiludie O, Kachwele R. Road alignment and gradient issues in the maintenance of logging roads in Tanzania. Int J For Eng, 2000, 11: 22-29.

[2] Akay AE. Minimizing total costs of forest roads with computer-aided design model. Sadhana, 2006, 31(5): 621-633.

[3] Akay AE, Sessions J. Applying the decision support system, TRACER, to forest road design. West J Appl For, 2005, 20(3): 184-191.

[4] Akay AE, Wing MG, Sessions J. Estimating sediment reduction cost for low-volume forest roads using a LiDAR-derived high-resolution DEM. Balt J Road Bridge Eng, 2014, 9(1): 52-57.

[5] Akgul M, Esin AI, Ozmen M (2012) Planing of forest roads with dynamic modeling CAD programs, KSU J. Enginering Sci., Special Issue, pp 115–121

[6] Akgul M, Demir M, Ozturk T, Topatan H, Budak YE. Investigation of recreational vehicles maneuverability on forest roads by computer-aided driving analysis. Balt J Road Bridge Eng, 2016, 11(2): 111-119.

[7] Altunel AO (2006) Entegration of forestry application with geopraphic information systems. Istanbul University, Unpublished Phd thesis, Istanbul

[8] Aruga K. Tabu search optimization of horizontal and vertical alignments of forest roads. J For Res, 2005, 10(4): 275-284.

[9] Aruga K, Chung W, Akay AE, Sessions J, Miyata E. Incorporating soil surface erosion prediction into forest road alignment optimization. Int J For Eng, 2007, 18(1): 24-32.

[10] Bayoğlu S (1997) Orman transport tesis ve taşitlari, İ.Ü. Orman Fakültesi, İstanbul, 975-404-430-9

[11] Bugday E, Menemencioglu K (2014) Assessment of existing forest road standards conformity for stumpage sale in Turkey. 2nd Mediterranean forest and environment symposium. 22–24 October, Isparta, Turkey. pp 300–308

[12] Cox R (1998) A review of the effect of increases in vehicle size on Australian geometric road design standards. In: Proc., 5th Int. symp. on heavy vehicle weights and dimensions, vol 3

[13] Dasdemir I. Evaluations on implementations of stumpage sales. J Bartın Fac For, 2011, 13(20): 71-79.

[14] Demir M. Impacts, management and functional planning criterion of forest road network system in Turkey. Transp Res Part A, 2007, 41: 56-68.

[15] Easa SM, Mehmood A. Optimizing design of highway horizontal alignments: new substantive safety approach. Computer-Aided Civil Infrastruct Eng, 2008, 23(7): 560-573.

[16] Gümüş S (2003) Functional based forest road network planning with geographic information system, Phd thesis, KTU University, Trabzon

[17] Harkey DL, Council FM, Zegeer CV. Operational characteristics of longer combination vehicles and related geometric design issues. Transp Res Rec, 1996, 1523(1): 22-28.

[18] Kramer BW. Forest road contracting, construction, and maintenance for small forest woodland owners, 2001, Corvallis: Oregon State University, College of Forestry, Forest Research Laboratory.

[19] Murray TA. Rout Planning for Harvest Site Access. Can J For Res, 1998, 28(7): 1084-1087.

[20] OGM. Orman yollari planlamasi, yapimi ve bakimi-tebliğ No:292, 2008, Ankara: OGM İnşaat ve İkmal Dairesi Başkanlığı.

[21] Parsakhoo A, Hosseini SA. Formulation of the truck selection process for secondary transportation in Hyrcanian Forests. World Appl Sci J, 2009, 6(2): 283-288.

[22] Sessions J, Boston K, Wing MG, Akay AE, Theisen P, Heinrich R (2007) Forest road operations in the tropics. Edited by Sessions, J. Springer, Berlin, p 170, ISBN 978-3-540-46392-4

[23] Vatandaşlar C, Demir M. Opportunities of forest roads usage as emergency access road for natural disaster. J Fac For Istanb Univ, 2016, 66(2): 369-378.