Before you travel, you should check the traffic flow in advance so as not stuck in traffic. Google Maps Indonesia, already provides traffic information.
Please open http://maps.google.co.id/
See the following picture:
Roads with dark red with black stripe, and dark red indicates the traffic flow is slow.
Road with a yellow and green lines indicate the flow of traffic, fast or smooth.
Note:
Only available for Jakarta, Indonesia.
For other cities in Indonesia are not yet available.