TNCs were criticized for extreme surcharges during emergencies such as Hurricane Sandy , the 2014 Sydney hostage crisis , and the June 2017 London Bridge attack , especially when taxis offered to transport riders for free ; however , in many cases , the surcharges were refunded by the TNCs and TNCs later agreed to either not charge surcharges , or in some cases , offer free rides , during certain emergencies
2014 Sydney hostage crisis
2014 Sydney hostage crisis
Transportation network company