Posted:
Safety on the road: High
I think that your biggest threat while being in Jakarta will be dealing with motorized vehicles, whether your are walking, in a car, or in a motorcycle. If you take the taxi for instance, you will notice cars don't have a safety belt in the back. If you take an ojek (moto-taxi), the driver will give you a shitty helmet and drive recklessly, putting your life in danger every second.
How to avoid it: Take silver bird taxis, go in the passenger seat, avoid taking ojeks, be very careful when walking in Jakarta.
Natural Disaster: High
Flood, earthquakes, volcanoes, tsunamis... Jakarta, as the rest of the country, is prone to natural disasters. In fact, according to the Natural Disaster Risk Index, Indonesia is the world's second most dangerous nation regarding natural catastrophes after Bangladesh. I don't think it can impact your stay in Jakarta though, because it is something you cannot really protect yourself from. All you can do is cross your finger and hope that everything will be OK..
More info:
westhillconsultingtravel-tour.blogspot.com/