@article { author = {Alizadeh, Hooshmand and Shahmoradi, Behzad and Abdi, Mohammad Hamed and Rahimi, Arman}, title = {Developing Transit-oriented Strategies for Sanandaj City Center, Iran}, journal = {International Journal of Transportation Engineering}, volume = {1}, number = {3}, pages = {141-150}, year = {2014}, publisher = {Tarrahan Parseh Transportation Research Institute}, issn = {2322-259X}, eissn = {2538-3728}, doi = {10.22119/ijte.2014.4785}, abstract = {Over recent decades, "Transit-oriented development" has been developed as a new approach based on sustainability concepts. This approach is mainly concerning coordinated action between land use planning and transportation planning which tries to create a clean, people friendly, livable, and dynamic community with growing local economy. Today, old urban centers face enormous challenges in terms of their physical and functional aspects. One of these is traffic congestion caused by heavy movement of private cars. In this regard, this paper tries to mitigate the current challenges and to enhance the quality of Sanandaj city center life, using TOD principles. To do this, SWOT analysis is the main approach of the paper to evaluate the existing conditions of the city centre to reach the suitable strategies. Considering main aim of research, three objectives including increasing spatial and functional sustainability, increasing accessibility and providing sustainable transport options along with easy pedestrian movement, and reducing environmental challenges have been outlined to conceptualize the suitable strategies of the research. The findings show that if TOD is to be widely adopted as a real alternative to automobile-oriented urban pattern, it needs to capture a broad market view from both sides of private and public sectors. Nevertheless, it is really the public sector that is asked to take the lead, set the stage, develop polices and offer important subsidies and assistance to support the creation of TOD in the city centre.}, keywords = {Transit- Oriented Development,public transportation,transit center,Sanandaj downtown,SWOT Analysis}, url = {http://www.ijte.ir/article_4785.html}, eprint = {http://www.ijte.ir/article_4785_35b936039cbe4f1c342bbcdc2a76633d.pdf} } @article { author = {Haghani, Milad and Shahhosseini, Zahra and Samimi, Amir and Z. Ashtyani, Hedayat}, title = {On Calibration and Application of Logit-Based Stochastic Traffic Assignment Models}, journal = {International Journal of Transportation Engineering}, volume = {1}, number = {3}, pages = {151-172}, year = {2014}, publisher = {Tarrahan Parseh Transportation Research Institute}, issn = {2322-259X}, eissn = {2538-3728}, doi = {10.22119/ijte.2014.4786}, abstract = {There is a growing recognition that discrete choice models are capable of providing a more realistic picture of route choice behavior. In particular, influential factors other than travel time that are found to affect the choice of route trigger the application of random utility models in the route choice literature. This paper focuses on path-based, logit-type stochastic route choice models, in which several forms of logit-family models have been calibrated using practical data and examined on an illustrative network. For each type of the logit-family models, two modeling approaches have been implemented in stochastic traffic assignment (STA). The first approach is a univariate route choice model. Challenges in the estimation of path utility are discussed and a heuristic estimation algorithm for univariate models is proposed. As the proposed approximate calibration method does not require resorting to choice data, it can be regarded as a more practical method than the traditional approach and can overcome many inherent difficulties in calibration of route choice models in univariate case. The second one includes a multi-criteria path utility function considering travel time and monetary cost along with travelers’ income to determine the equilibrium network flow. This model has been calibrated based on a stated preferences data set. This study showed that estimation of the utility could have remarkable impacts on the equilibrium flow and thereby on policy assessments, while the impact of model specification is far less severe. The importance of this achievement arises from the fact that most of the efforts made in stochastic assignment literature have been dedicated to apply theoretically appealing choice models, and model calibration by comparison, have not received considerable attention.}, keywords = {Stochastic Traffic Assignment,Route Choice,logit models,Stated Preference Data,Model Specification and Calibration}, url = {http://www.ijte.ir/article_4786.html}, eprint = {http://www.ijte.ir/article_4786_36cc8807337b00c200a0a6fbff811759.pdf} } @article { author = {Mahmoudabadi, Abbas and Seyedhosseini, Seyed Mohammad}, title = {Developing a Bi-level Objective Model of Risk-Cost Trade-off for Solving Locating-Routing Problem in Transportation of Hazardous Material}, journal = {International Journal of Transportation Engineering}, volume = {1}, number = {3}, pages = {173-182}, year = {2014}, publisher = {Tarrahan Parseh Transportation Research Institute}, issn = {2322-259X}, eissn = {2538-3728}, doi = {10.22119/ijte.2014.4787}, abstract = {Allocating and routing problems in the field of transportation engineering are generally solved using the objective function of minimizing transport cost. Transport risk is a main concern in hazardous material transportation, mainly dependent on the vision of decision makers (national and/or local authorities). In this research work, a trade-off approach has been proposed to determine the safest paths and the best locations of distribution centers for carrying the third type of hazardous materials categorized as flammable liquids. Trade-off has been defined between risk and cost, whereas a bi-level objective function has been developed to determine the best routes for hazardous material transportation and also to determine the best locations for establishing the main distribution centers. At the first level, obtaining the best locations for distribution centers are obtained then determining the safest paths of origin-destination is developed at the second level. Experimental data in the second largest Iranian province of Fars which consists of fifty-nine nodes and eighty edges has been used for applying analytical process. Results show that decision makers should be aware in the process of allocating and routing problems as well as influencing attributes before to make decisions, because the priorities of risk and time and the number of distribution centers play significant roles in routing and allocating hazardous materials.  }, keywords = {hazardous materials transportation,Location-routing problem,risk-cost trade-off,Risk Analysis}, url = {http://www.ijte.ir/article_4787.html}, eprint = {http://www.ijte.ir/article_4787_233cd677c9e9108d10f0a47ce688e88f.pdf} } @article { author = {Malakouti, Mahmoud and Ameri, Mahmoud and Malekzadeh, Parviz}, title = {Incremental layerwise finite element formulation for viscoelastic response of multilayered pavements}, journal = {International Journal of Transportation Engineering}, volume = {1}, number = {3}, pages = {183-198}, year = {2014}, publisher = {Tarrahan Parseh Transportation Research Institute}, issn = {2322-259X}, eissn = {2538-3728}, doi = {10.22119/ijte.2014.4788}, abstract = {This paper provides an incremental layerwise finite element formulation for the viscoelastic analysis of multilayered pavements.  The constitutive behavior of asphalt concrete is represented by the Prony series. Layerwise finite element has been shown to provide an efficient and accurate tool for the numerical simulation of laminated structures. Most of the previous research on numerical simulation of laminated structures have been limited to elastic material behavior. Thus, the current work focuses on layerwise finite element analysis of laminated structures with embedded viscoelastic material such as pavements.  A computer code based on the presented formulation has been developed to provide the numerical results. The proposed approach is verified by comparing the results to analytical solutions, existing numerical solutions in the literature  and those obtained from the ABAQUS software, as well. Finally, and as an application of the presented formulation, the effects of time and load rate on the quasi-static structural response of asphalt concrete (AC) pavements are studied.}, keywords = {Layerwise finite element,linear viscoelastic materials,multilayered structures,Pavements,Prony Series}, url = {http://www.ijte.ir/article_4788.html}, eprint = {http://www.ijte.ir/article_4788_f713b833086bda109998c480e8fff64b.pdf} } @article { author = {Mirbaha, Babak and Saffarzadeh, Mahmoud and Seyed Abrishami, Seyed Ehsan and Pirdavani, Ali}, title = {Evaluating the Willingness to Pay for Urban Congestion Priced Zones (Case Study of Tehran)}, journal = {International Journal of Transportation Engineering}, volume = {1}, number = {3}, pages = {199-210}, year = {2014}, publisher = {Tarrahan Parseh Transportation Research Institute}, issn = {2322-259X}, eissn = {2538-3728}, doi = {10.22119/ijte.2014.4789}, abstract = {Congestion pricing is one of the major travel demand management policies to reduce traffic volumes in metropolitans. One of the main factors for effective implementation of this policy is to analyze users' response to different toll rates. In this paper, the willingness of users to pay for using their personal cars is evaluated. The stated preference method was applied for data gathering. Several pricing scenarios are developed for analyzing the willingness to pay of users, under different scenarios. Travelers’ socio – economic characteristics as well as their trip chains and their mode choice according to different pricing scenarios are gathered by means of a questionnaire that was filled out by more than 4000 respondents. A binary logit model is applied to model choice behavior of users against different price scenarios. Results show that with 50000 Rials[i] toll for Tehran CBD[ii] area; 27 percent of users will use their personal cars for entering the congestion priced area. This rate is reduced to 7 percent if the toll increases to 200000 Rials. Keywords: Congestion pricing, stated preference method, modal split models [i] - 12600 rials = 1US dollar [ii] - Central Business District     6.     References -Azari Ahmadi, K., Arintono, S., Hamid, H. and Rahmat, R. (2013) “Modeling demand under parking and cordon pricing policy”, Transport Policy 25, PP.1-9. -Bowerman, A. (2007) “The costs and benefits of road pricing: Comparing nationwide charging with project-based schemes”, IEA discussion paper No.17-18. -Brownstone, D., Ghosh, A., Golob, T.F., Kazimi, C. and Van Amelsfort, D. (2003) “Driver's willingness to pay to reduce travel time”, evidence from the San Diego I-15 Congestion Pricing Project. Transportation Research A 37(15), pp. 373–387. -Carey, M., and Srinvasan, A. (1993), “Externalities, average and marginal costs, and Tolls on congested networks with time varying flows” Operational Research 41(1), PP. 217-231. -Calfee, J. and Winston, C. (1998) “The value of automobile travel time: implications for congestion policy”, Journal of Public Economics 69, pp.83–102. -Chang Jou, R., Chiou, Y., Wei Kuo, C. and Tan, H. (2013)  “Freeway drivers' willingness to pay for an on board unit under an electronic toll collection system”, Transport Research Part C 27, PP.16-24. -Comune di Milano (2008) “Monitoraggio indicatori Ecopass.AgenziaMilanese Mobilit_a Ambiente”,Milano, Italy -De Palma, A. (2009) “Traffic congestion pricing methods and technologies”,  Department of Economics, Ecole Polytechnique, Institut Universitaire de France. - Ferrari, P. (2010) “Willingness to spend and pricing rates”, Transport Policy 17, p.160-172. -Gonzalez, R. M. (1997) “The value of time: a theoretical review”, Transport Reviews 17, pp.245–266. -Khattak, A., Yim, Y. and Prokopy, L. (2003) “Willingness to pay for travel information”, Transport Research Part C, 11, pp.137-159. -Lopez, F., Faulin, J. and Sanchez, M. (2012) “Determinants of the willingness to pay for reducing the environmental impacts of road transportation”, Transport Research Part D 17, pp.215-220. -Lopez, F., Faulin, J. and Sanchez, M. (2012) “Determinants of the willingness to pay for reducing the environmental impacts of road transportation”, Transport Research Part D 17, pp.215-220. -Louviere, J., Hensher, A. and Swait, J. (2003) “Stated choice methods (Analysis and applications)”, Cambridge University Press, UK. -McFadden, Daniel (1974) "The measurement of urban travel demand", Journal of Public Economics, Vol. 3(4), pp. 303-328. -MIT Portugal Program (2009) “Stated preference survey for new smart transport modes and services: Design, pilot study and new revision”, Transportation Systems Focus Area. -Parseh Transportation Research Institute (2010) “Congestion pricing in CBD of Tehran”, Tehran Parseh Transportation Research Institute. -Small, K. A. (1982) "The scheduling of consumer activities: Work trips", The American Economic Review, 72(3), pp.467-479 -Small, K. A., Noland, R., Chu, X. and Lewis, D. (1999) “Valuation of travel-time savings and predictability in congested conditions for highway user-cost estimation”, National Cooperative Highway Research Program Report 431, National Academy Press, Washington, DC. -Tehran Comprehensive Transportation and Traffic Studies Company, 2006. ( There is no title for this document) -Transport for London (2004) “Central London congestion charging: impact monitoring”, Second Annual Report, London: Transport for London. }, keywords = {Congestion Pricing,Stated preference method,Modal split models}, url = {http://www.ijte.ir/article_4789.html}, eprint = {http://www.ijte.ir/article_4789_2889cf9a665bfbe441c33510eef2ccd2.pdf} } @article { author = {Purwana, Yusep Muslih and Nikraz, Hamid}, title = {The Correlation between the CBR and Shear Strength in Unsaturated Soil Conditions}, journal = {International Journal of Transportation Engineering}, volume = {1}, number = {3}, pages = {211-222}, year = {2014}, publisher = {Tarrahan Parseh Transportation Research Institute}, issn = {2322-259X}, eissn = {2538-3728}, doi = {10.22119/ijte.2014.4790}, abstract = { In pavement design, the CBR and direct shear tests are two very common laboratory investigations for predicting the strength of a subgrade layer. The relationship between the CBR and water content has been commonly presented in analyses, with the result of the direct shear being expressed from the aspect of effective cohesion and the internal friction angle. Even though most natural soil is in an unsaturated condition, the effect of soil suction on CBR has not been taken into account in practice. The information on the CBR based on soil suction is very rare. A new CBR test technique using suction measurement was recently implemented by the authors, namely the suction-monitored CBR test. The aim of this study is to make a correlation between the unsaturated CBR measurement and the unsaturated shear strength of a subgrade layer. The data was taken from suction-monitored CBR tests and suction-monitored direct shear tests on sand and sand-kaolin clay mixtures. The results indicate that there is a positive correlation between the CBR and the unsaturated shear strength. By using this correlation, the suction-affected CBR of a particular soil can be predicted using the suction-monitored direct shear test.}, keywords = {CBR-shear strength correlation,sand-kaolin clay mixtures,unsaturated shear strength}, url = {http://www.ijte.ir/article_4790.html}, eprint = {http://www.ijte.ir/article_4790_8488b0d83b290f69c910264da2f7b97d.pdf} }