S. Rajkumar .... Petitioner in WP No.9011 of 2016 M. Pachayappan .... Petitioner in WP No.9012 of 2016 S. Prabu .... Petitioner in WP No.9013 of 2016 K.K. Gopal .... Petitioner in WP No.9014 of 2016 R. Sathyanathan .... Petitioner in WP No.9015 of 2016 S. Muthamizhan .... Petitioner in WP No.9016 of 2016 D. Nagappan .... Petitioner in WP No.9017 of 2016 M. Asees .... Petitioner in WP No.9018 of 2016 P. Nageshwar Rao .... Petitioner in WP No.9019 of 2016 L. Srikanth .... Petitioner in WP No.9020 of 2016 M. Sivakumar .... Petitioner in WP No.9021 of 2016 v. The Regional Transport Officer, Chennai-Central, Chennai – 600 023 ... Respondent in WP No.9011 of 2016 The Regional Transport Officer, Chennai-North, Chennai – 600 099 ... Respondent in WP Nos.9012, 9015, 9017, 9018 of 2016 The Regional Transport Officer, Chennai-North-West, Chennai – 600 049 ... Respondent in WP No.9013 of 2016 The Regional Transport Officer, Chennai-North-East, Chennai – 600 081 .... Respondent in WP No.9014 of 2016 The Regional Transport Officer, Chennai-South-West, Chennai-600 092 .... Respondent in WP Nos.9016, 9019 of 2016