“…The results are obtained from the Transportmetrica 197 average of the historical traffic data at the same time of day and day of the week. Since non-parametric regression generally performs better than its parametric counterparts (Smith and Demetsky 1997, Lam and Xu 2000, Ding et al 2002, Smith et al 2002, Yin et al 2002, Tang et al 2003, Vanajakshi and Rilett 2004, Wu et al 2004, Liu et al 2005, Luo et al 2005, Hong et al 2006, Lam et al 2006a,b, Lee et al 2006, Zhang and Xie 2007, Lam and Toan 2008, Li et al 2008, Manoel et al 2009a, the comparison of different non-parametric forecasting results is investigated in detail after specifying the variable d. In the study, the mean absolute percentage error …”