There are several ring roads in Singapore, of course these are the ones from various places.
Woodlands Ring Road is a road in Singapore, that is a smaller road at Admiralty, Singapore.
Yishun Ring Road is a road in Singapore, that encircles Yishun.
Bukit Panjang Ring Road is a road in Singapore, that starts from Pending, via Bangkit LRT Station, Segar LRT Station, Jelapang LRT Station and Senja LRT Station.