During times of high rider demand, fares may increase. Surge pricing is specific to the vehicle option as well as, both the rider's and your location.
If you drive through multiple surge areas while waiting for a trip, you'll always earn the highest surge amount on your next trip. And if a rider requests from a different surge area than the one you're in, you'll earn the higher of the 2 amounts.
Zoom in to colored areas of your app's city map to see additional surge amounts that can be earned.