The reason these gantries were built is that the roads they are built on lead to the city. These gantries will be turned on as necessary to ensure these roads maintain optimal traffic flow.

ERP is used on expressways to redirect traffic away from the expressways during peak hours. Drivers who do not wish to pay ERP to use the expressways during peak hours must find an alternative route to the city, such as through the heartland, or take public transport.

Once the new gantries are switched on, drivers will have to pay to get to the city whether they use the expressways or go through the heartland.

Will such a move actually redirect traffic back to the expressways?

If drivers have to pay ERP anyway, why should they pay to use a slower route through the heartland if paying a bit more on the expressway gets them there faster?

Vincent Ng Teck Soon

I AM writing to find out why two ERP gantries have been erected at Upper Boon Keng and Geylang Bahru 500m apart. What traffic are these gantries meant to control?

Geylang West is a small residential estate, and we feel 'locked in' by these two gantries. Why should we put at a disadvantage?

Does the Land Transport Authority know the Housing and Development Board has decided to close Upper Boon Keng Road Food Centre temporarily for at least one year after Chinese New Year? Thus, the nearest market residents can patronise will be Geylang Bahru Hawker Centre.

Chan Nghee Eng