HDB monitoring situation
Mr Sitoh Yih Pin, the Member of Parliament for Potong Pasir, told The New Paper that the situation at Toa Payoh Lorong 8 is being monitored.
He said: "We have noticed the problem and informed the Housing Development Board, requesting that they resolve the issue quickly."
In an e-mail reply, an HDB spokesman said the gantry is in good working condition with a response time of 2 to 3 seconds.
The HDB observed that the parking demand is very high during peak hours (mealtimes and weekends).
It noted that with many of the vehicles choosing to turn right towards the Lorong 6/Braddell Road area, the vehicles have to wait for the traffic to be clear in both directions before they can turn.
This has inadvertently hampered the vehicle flow out of the carpark.
HDB said it will continue to monitor the situation.
Dr Park Byung Joon, head of the urban transport management programme at SIM University, said there are ways to reduce jams caused by the barrier system during peak hours.
He said: "One way is to make more than one exit lane, for example, by placing two or more barriers. The more effective way is to construct alternative exits to the main road.
"All options require a bit of investment, but it wouldn't be too expensive."
Dr Park added that while the automatic pay system with barriers is more expensive to manage than parking coupons, it is a more effective and convenient method to enforce parking payment.