I suggest reading the import guidelines from http://wiki.openstreetmap.org/wiki/Import/Guidelines
The Open Data License (https://data.gov.sg/open-data-licence) has “Limitations” and “Additional Conditions” that doesn’t seem compatible with ODbL, so probably is not legally possible to import their data.
Hi muralito, thanks for the response. I guess the best we can do then is to use the data sets as vague reference points, then personally scout those places and record our data then?
Hey Guys, Im mapping Singapore mAps and completing road networks and building Polygons.
Please let me know what imagery should I use. Cause I dont want to conflict the road lines by using a different imagery and make changes to already correct roads.