We refer to Dr Timothy Ng’s letter “Remove traffic lights at junction” (Straits Times, 13 Nov 2014).
From our site assessment, motorists have a clear line-of-sight of the traffic signals at the junction of Lornie Road and Sime Road as the road is relatively straight. Along roads where it may be difficult for motorists to see the traffic signals from a distance, such as along a curved road, we will install additional flashing amber signals upstream of the junction to help alert motorists.
For Sime Road, the traffic signal is needed to allow motorists from it to turn safely into Lornie Road. If the traffic signal is removed, motorists from Sime Road have to make use of traffic gaps to turn left into Lornie Road. This is unsafe as Lornie Road experiences very heavy traffic, especially during the evening peak hours.
We have also put in sensors at the junction which can detect the presence of vehicles, and hence minimises delays to the main road traffic. The traffic signals will only turn in favour of motorists from Sime Road when there are vehicles waiting to exit.
We will continue to monitor the traffic flow, and make adjustment to the traffic configuration where necessary. We thank Dr Ng for his feedback.
Helen Lim (Ms)
Director, Media Relations
Land Transport Authority