Correction to: International Journal of Intelligent Transport Systems Research (15) 2: 108–116.

https://doi.org/10.1007/s13177-016-0125-z

The authors would like to add the following paragraphs in the article note section of the original version of the paper:

Part of this paper were first presented in a conference by the first author at the 2014 Transportation Research Board 93rd Annual Meeting. The version published here has several small revisions based on the presentation paper.