According to the latest Customer Satisfaction Index of Singapore (CSISG), commuters are as dissatisfied with public transport as they were a year ago, even though MRT passengers now think more highly of the service quality provided by the train operators. Commuters polled between May and July reported no significant change in how happy they were with public transport operators. This resulted in a score of 60.6 for public buses and 64.1 for the MRT system - far below the overall transportation and logistics sector's improved score of 72.7. Despite this, the Institute of Service Excellence at SMU (ISES) said that there are signs of satisfaction improvement. For instance, SBS Transit, which operates the North-East Line, managed a significant increase in commuter satisfaction, to 67.3. "Over time, this should lead to improved customer experience and satisfaction levels. The challenge is for all companies to keep their finger on the pulse on what matters most to their customers, and deliver on it," said ISES Academic Director Marcus Lee.