Calling 911 for an ambulance can, in many US cities, get you a paramedic on a fire truck instead. That’s because fire departments often oversee both firefighters and the paramedics who work on ambulances, yet many departments have far fewer ambulances than fire trucks.…

If you have an emergency in Jakarta, you can dial 1-1-8—Jakarta’s 911. But it’s iffy whether an ambulance will be able to get to you in time. In this city of 10 million people, over 1,000 died in traffic accidents in 2010 (2x as many as Seoul); thousands more died of heart…