Here's how you can see traffic information in Apple's Maps app for iOS devices.
1. Go to Privacy.
2. Go to Location Services.
3. Go to System Services.
4. Make sure that Traffic is set to On.
In the Maps app, do the following:
1. Tap the curled page at the bottom right corner.
2. Choose the "Show Traffic" option.
Now you'll see traffic incidents on the map, thus making it easier to avoid getting caught in traffic snarls while you continue on your way.
Read more: iLounge