Procedia - Social and Behavioral Sciences 48 ( 2012 ) 1545 – 1556

1877-0428 © 2012 Published by Elsevier Ltd. Selection and/or peer review under responsibility of the Programme Committee of the Transport Research Arena 2012 doi: 10.1016/j.sbspro.2012.06.1130

Available online at www.sciencedirect.com

© 2012 Published by Elsevier Ltd. Selection and/or peer review under responsibility of the Programme Committee of the Transport Research Arena 2012

1546 Athina Tympakianaki et al. / Procedia - Social and Behavioral Sciences 48 ( 2012 ) 1545 – 1556

1547 Athina Tympakianaki et al. / Procedia - Social and Behavioral Sciences 48 ( 2012 ) 1545 – 1556

1548 Athina Tympakianaki et al. / Procedia - Social and Behavioral Sciences 48 ( 2012 ) 1545 – 1556

1549 Athina Tympakianaki et al. / Procedia - Social and Behavioral Sciences 48 ( 2012 ) 1545 – 1556

1550 Athina Tympakianaki et al. / Procedia - Social and Behavioral Sciences 48 ( 2012 ) 1545 – 1556

1551 Athina Tympakianaki et al. / Procedia - Social and Behavioral Sciences 48 ( 2012 ) 1545 – 1556

1552 Athina Tympakianaki et al. / Procedia - Social and Behavioral Sciences 48 ( 2012 ) 1545 – 1556

1553 Athina Tympakianaki et al. / Procedia - Social and Behavioral Sciences 48 ( 2012 ) 1545 – 1556

1554 Athina Tympakianaki et al. / Procedia - Social and Behavioral Sciences 48 ( 2012 ) 1545 – 1556

1555 Athina Tympakianaki et al. / Procedia - Social and Behavioral Sciences 48 ( 2012 ) 1545 – 1556

1556 Athina Tympakianaki et al. / Procedia - Social and Behavioral Sciences 48 ( 2012 ) 1545 – 1556