Just got a reply from LTA, with regards to a mail request to put up barriers at the divider.
Thank you for your email on the above matter.
We have checked the traffic condition along Punggol Field near Punggol Plaza. It showed that the traffic volume is moderate and there are adequate traffic gaps to allow pedestrians to cross the road. In addition, the line of sight for road users is good.
To further enhance safety, we have arranged to extend the centre railings along Punggol Field near Punggol Plaza. This will channelise pedestrians to use the existing crossing facilities nearby. We thank you for your feedback.