In this paper freight transportation of Turkey was evaluated according to transport modes. The transport modes analyzed include road, railway and waterway. The objective is to guide policy makers to correctly formulate strategies and make logical investment decisions about freight transportation system. There are freight transportation problems in Turkey because of unbalanced transport mode use resulting from lack of long-run strategic planning and accordingly incorrect investment decisions. The freight transportation of Turkey was evaluated by analyzing the past data. The freight transport data between years 1983 and 2005 for road and railway modes were used to obtain forecasts. The freight transport data of Turkey and European countries as of 2005 were analyzed based on cluster analysis. The suggestions were made in order to get a more balanced freight transportation system in a near future in Turkey.Doğuş Üniversitesi, TÜBİTA

Kuleli Pak, Burcu

Sennaroğlu, Bahar

Dogus University Institutional Repository

Research in Transport and Logistics 2009 Proceedings Doğuş UniversityEVALUATION OF TURKEY’S FREIGHT TRANSPORTATIONBurcu K U L E L iP A K  1 a n d B a h a r  SE N N A R O G LU  2Abstract — In this paper freight transportation o f  Turkey was evaluated according to transport modes. The transport modes analyzed include road, railway and waterway. The objective is to guide policy makers to correctly formulate strategies and make logical investment decisions about freight transportation system. There are freight transportation problems in Turkey because o f  unbalanced transport mode use resulting from  lack o f  long-run strategic planning and accordingly incorrect investment decisions. The freight transportation o f  Turkey was evaluated by analyzing the past data. The freight transport data between years 1983 and 2005 fo r  road and railway modes were used to obtain forecasts. The freight transport data o f  Turkey and European countries as o f  2005 were analyzed based on cluster analysis. The suggestions were made in order to get a more balanced freight transportation system in a near future in Turkey.Keywords — freight transportation, transport modesIN T R O D U C T IO NThe volume of freight transportation has been growing significantly over the past few decades in Turkey. The amount o f freight transport in year 2005 in million tones / km is about 3.56 times more than that o f year 1983. When the distribution by transport modes is analyzed at the same time period, it can be seen that use of roads has increased 3.95 times, while use o f railway has only increased 1.48 times.The portion o f  highway, railway, waterway (maritime and inland waterways) and air transport differs in each country according to the geographical conditions, technologies, etc. of that country. In Turkey, highway use for both passenger and freight transportation has increased much more quickly than the other transport modes. As a result o f this unbalanced development, the portion o f highway has increased over 90%. During this development the number and freight capacities o f  transportation firms has also increased and idle capacities has formed, which results in fierce competition that makes an efficient and safe transportation difficult. In this medium, while traffic accidents increased, at the same time the physical structures of highways damaged quicker than expected because o f  the high ratio o f  heavy vehicle and excess loading o f  considerable amount o f  vehicles [1].In order to maintain and improve the highway system in Turkey, billions o f Turkish Liras are spent annually [5]. Although railway technology has shown a rapid improvement in the world, Turkey could not shown a parallel improvement in this area because o f  unbalanced financial distribution between transport modes. Also maritime is the transportation system that has the biggest portion (about 95%) in W orld’s transportation system. It is 3.5 times more inexpensive than railway and 7 times more inexpensive than highway. Today, the burden o f that situation on country's economy is discussed and studies to shift freight transport to other modes are conducted [1].In the literature, studies were made to guide the transportation policy makers in their strategic decisions on transportation planning [2]-[4]. In this study freight transportation of Turkey was evaluated according to transport modes for the same objective as well.1 Burcu Kuleli Pak, Doğuş University, Faculty of Engineering, Industrial Engineering Department, Acıbadem, Istanbul, Turkey, bkuleli@dogus.edu.tr2 Bahar Sennaroğlu, Marmara University, Faculty of Engineering, Industrial Engineering Department, Göztepe, Istanbul, Turkey, sennaroglu@eng.marmara.edu.tr285Research in Transport and Logistics 2009 Proceedings Doğuş UniversityE V A L U A T IO NThe freight transport data o f Turkey by road, railway, maritime, and air transport modes between years 1983 and 2005 [6] are given in Table 1. Data do not include transport to or from foreign countries. The forecasting models are selected based on error measure MSE and diagnostic check. The forecasting method used for the road data is Box-Jenkin’s ARIMA with parameters (p=0, d=2, q=1). The forecasting method used for the railway data is Double Exponential Smoothing with smoothing constants a=0.52 and P=0.124. Because o f the privatizations o f Turkish Maritime Cargo Lines there are missing data in maritime transport, therefore forecasting could not be made for this mode. Also air transport was not forecasted because the portion o f use o f this mode is very low. As forecasts indicate, the increasing trends are expected to continue in the future (Figures 1 and 2). Therefore, energy use in freight transportation is also expected to increase. It is obvious that there is unbalanced transport mode use in Turkey in favor o f road by 90.8% when total freight transport is considered by modes between years 1999 and 2003 (Figure 3). Road is the most energy consuming and environmentally harmful transport mode among all transport modes. Balancing mode share by railway and maritime for long-haul and by road for short-haul is the best way to achieve the most energy-efficient and environmentally sustainable way for freight transportation. Transportation planning and investment decisions should be made based on research on selection o f optimal routes and optimal connections among modes according to a set o f criteria such as cost, time, distance, safety, energy, and environment.TABLE 1Turkey Freight Transport by Transport Modes (mil ion tone-km) [6’Years Road RailWay Maritime Air Transport1983 42189 6124 2934 571984 43878 7532 7719 631985 45634 7747 4504 591986 54018 7219 4682 641987 58832 7259 4541 791988 65459 8006 9454 881989 68239 7571 7152 951990 65710 7915 7234 1071991 61969 7995 2780 761992 67704 8246 1756 1021993 97843 8410 901 1521994 95020 8215 587 1981995 112515 8516 276 2311996 135781 8914 2401997 139789 9614 2631998 152210 8376 2741999 150974 8237 8200 2862000 161552 9761 7900 3102001 151421 7486 8100 2852002 150912 7169 5738 2752003 152163 8615 5400 2762004 156853 9334 3212005 166831 9078 6158 392286Research in Transport and Logistics 2009 Proceedings Doğuş UniversityYearData FitForecastFIGURE. 1 Forecasts for Freight Transport by Road(Ujï2 > n  t : o(AC(ÜData FitForecastYearFIGURE- 2 Forecasts for Freight Transport by RailWay287Research in Transport and Logistics 2009 Proceedings Doğuş UniversityFIGURE. 3Use o f Modes for Total Freight Transport between 1999 and 2003Freight transport data o f European Countries for 2005 [6] are used to group countries into clusters such that each cluster is as homogeneous as possible with respect to the clustering variables which are freight transport by railway, road, and inland waterways. In cluster analysis we select Euclidean Distance as a measure of similarity and the hierarchical clustering technique with single-linkage method. Agglomerative algorithm used to develop clusters is the single-linkage method which is based on minimum distance. The data and the result o f the analysis are given in Table 2. The cut shown by the dotted line in the dendrogram (Figure 4) gives the composition o f a four-cluster solution. Cluster 1 contains Turkey, England, Italy, Spain, and France, all o f which have high amount o f freight transport. Among them Turkey is the one that use railway least. Cluster 2 contains Germany which has the highest amount o f freight transport and balanced mode share. Cluster 3 contains Netherlands which has lower amount of freight transport and the largest share in using inland waterways. Cluster 4 contains the remaining countries which have lowest amounts o f freight transport when compared with the countries in the other clusters.TABLE 2Freight Transport by Countries and Transport Modes in 2005 (billion tone-kmObservationCountry Railway RoadInlandWaterways Cluster1 Turkey 9.1 166.8 0 12 England 22.1 154.4 0.2 13 Luxembourg 0.4 0.5 0.3 24 Greece 0.6 18 0 25 Ireland 0 14 0 26 Portugal 2.8 17.4 0 27 Germany 81.7 237.6 64.1 38 Denmark 2 11.1 0 29 Italy 23.1 171.6 0.1 110 Netherlands 4.3 31.8 42.2 411 Spain 11.6 166.4 0 112 Belgium 9.2 19.3 8.6 213 France 41.9 177.3 8.9 114 Switzerland 11.4 0 0 215 Norway 2.1 15.4 0 2288Research in Transport and Logistics 2009 Proceedings Doğuş University16 Austria 18 12.5 1.8 217 Sweden 13.1 34.7 0 218 Finland 9.7 27.8 0.1 219 Czech Republic 15.9 15.5 0.1 220 Slovak Republic 9.3 5.6 0.1 221 Hungary 9 11.4 2.1 222 Bulgaria 5.2 5.1 0.8 223 Croatia 3.1 4.4 0.1 224 Romania 14.9 19.4 8.4 2Similarity53.59 —69.06 —84.53 —100.00Policy makers in Turkey made investments for many years only in road transport and neglected railways. To obtain a balanced transportation system like Germany investments should be made not only roads but also railways and maritime. Turkey geographically is very suitable country to integrate all transport modes to develop a single and balanced system of transportation.C O N C L U S IO NThere are freight transportation problems in Turkey because o f unbalanced transport mode use resulting from lack o f long-run strategic planning and accordingly incorrect investment decisions. In order to overcome the problems, all transport modes (road, railway, maritime, and air transport) should be integrated into a single system of transportation. The transport mode share should be balanced by using railway and maritime for long-haul and using road for short-haul in order to achieve the most energy-efficient and environmentally sustainable way for freight transportation. This requires detailed research on the selection o f optimal routes and optimal connections among transport modes according to a set o f criteria such as cost, time, distance, safety, energy, and environment. Policy makers should develop long-run strategic plans and make investment decisions for transportation using the results o f that research in order to get a more balanced freight transportation system in a near future in Turkey.R E F E R E N C E S[1] Kurnaz, K., 2007. “Üretim Merkezlerinden Hammadde Taşımacılığının Karayoluna Etkileri”, Master Thesis, Gazi Universityà H  r T T T :F t1 1 1 9 2 13 7 10 17 18 12 24 16 19 5 4 6 15 8 21 14 3 20 22 23ObservationsFIGURE. 4 Dendrogram for Freight Transport Data289Research in Transport and Logistics 2009 Proceedings Doğuş University[2] Ülengin, F., Önsel, Ş,, Topçu, İ., Aktaş, E. and Kabak, Ö., 2007. “An integrated transportation decision support system for transportation policy decisions: The case of Turkey”, Transportation Research Part A, 41, 80-97[3] Tortum, A., Yayla, N. and Gökdağ, M., 2008. “The modeling of mode choices intercity freight transportation with the artificial neural networks and adaptive neuro-fuzzy inference system”, Expert Systems with Applications, doi:1016/j.eswa.2008.07.032[4] Winebrake, J.J., Corbett, J.J., Falzarano, A., Hawker, J.S., Korfmacher, K., et al., 2008. “Assessing Energy, Environmental, and Economic Tradeoffs in Intermodal Freight Transportation”, Journal of the Air & Waste Management Association, 58, 1004 -1013[5] Turkish Ministry of Transportation, General Directorate of Highways website, http://www.kgm.gov.tr (accessed in September 2008).[6] Turkish State Railways Annual Statistics, 2002-2006, ISSN 1300-2503, p.109 and p.111, http://www.tcdd.gov.tr/genel/istatistik.htm (accessed in August 2008)290

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