Breakdown of Traffic Lights in Bad Weather Conditions

Ms Joan Pereira asked the Minister for Transport (a) over the last five years, how many incidences of traffic lights breaking down as a result of short circuits during heavy rain have occurred; and (b) what is being done to ensure that our traffic systems remain in working condition during bad weather.

Since 2009, the Land Transport Authority (LTA) has installed automatic circuit re-closer devices in all traffic lights, which serve to safely restore traffic light operations in the event of power trips. This has drastically reduced the number of traffic light breakdowns during heavy rain from over 800 a year to an average of 35 a year. LTA also works closely with Singtel and SP Group to ensure smooth communications and power supply to our traffic light systems.

LTA monitors Singapore's road system round the clock. When traffic lights break down, LTA responds within 20 minutes at high-priority locations, and 30 minutes at other locations. Where necessary, LTA and the Traffic Police will work together to assist in traffic management at affected junctions while the traffic lights are being repaired.