The Straits Times' senior transport correspondent Christopher Tan took a drive through the Marina Coastal Expressway on Monday and identified two problem areas that contributed to the morning rush hour jam.
Mr Tan said that motorists headed towards the west on Monday morning found themselves in a jam that was 'monumental'.
A check during lunchtime also showed two problem spots. The first was the entrance from the ECP towards the MCE, which required a sharp left turn. This caused motorists to apply their brakes and slow down, which in turn caused a shockwave effect towards the back. A queue will slowly form and lengthen with every slow down and application of the brake.
Two road signs also caused some confusion. One which read 'MCE (AYE)' and the other 'MCE (Central Boulevard) caused motorists to be unsure which lane they should filter into, causing a longer queue to form as motorists braked and weaved in and out of traffic.
The other problem was at Exit 5, the exit from the MCE tunnel into the ECP. Only two lanes are devoted to this exit, and traditionally, the volume of traffic in the evening going towards the east is huge.
While traffic slows down in an exit, a huge volume and only two lanes open to traffic leads to obvious consequences.
A small filter lane leading towards Fort Road after exiting from these two lanes also causes traffic tailback and some weaving in the two other lanes leading towards Changi.
Mr Tan said the eastbound problem may persist for some time if nothing is done about it. However, traffic within the MCE tunnel towards the west may improve when motorists become used to the fact they have to start keeping left and be prepared for a sharp turn.
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