USB ports on buses use low voltage that cuts electrocution risk: LTA

The USB charging ports on public buses here are of significantly lower voltage, which greatly reduces the likelihood of electrocution, the Land Transport Authority (LTA) said.

- Elaine Lee

"These ports operate at a significantly lower voltage of about 5V DC (direct current), compared to the 230V AC (alternating current) voltage of standard three-pin sockets," it said in response to queries.

LTA added that it regularly checks on public bus operators to make sure that their monthly inspections on their vehicles are up to maintenance standards.

Some 870 public buses here are equipped with USB charging ports, the authority said. As at May 2022, Singapore has about 5,800 public buses.