SINGAPORE, July 16 (Reuters) - Singapore subway operator SMRT will be given the maximum fine of S$2 million ($1.58 million) for two major disruptions in December that affected hundreds of thousands of commuters, a regulator said on Monday.
SMRT, about 54 percent owned by Singapore state investor Temasek Holdings, failed to maintain its network in good working order, the Land Transport Authority said.
A series of train disruptions in December tested Singapore's reputation for efficient services and dealt a blow to government efforts to promote public transport in the small and densely populated city-state of 5.2 million people.
During one of the biggest outages, hundreds of commuters were trapped underground without light or ventilation for more than an hour before they heard from SMRT.
"There were overall shortcomings in SMRT's maintenance and monitoring regime," the regulator said, adding that the maximum fine it could impose for each incident was S$1 million.
SMRT, which also operates buses and taxis, had net profit of S$120 million in its 2011 fiscal year on revenues of nearly S$1.06 billion, according to Temasek's latest annual report. ($1 = 1.2650 Singapore dollars) (Reporting by Kevin Lim; Editing by John O'Callaghan)