A number of live traffic report mobile apps can be downloaded from the iTunes store for free. The best of these are Beat the Traffic, Sigalert and INRIX, according to CNet.
Beat the Traffic shows where traffic is moving slowly or has stopped and provides accident alerts. It also features icons to view the feeds from traffic cameras and allows the user to make reports on accidents or traffic conditions.
Sigalert has many of the same features, but its map is not as detailed as Beat the Traffic's. Tapping a picture of the freeway allows the user to see the average speed near each exit.
The INRIX app has a unique comparative traffic feature that shows how the current road conditions compare with normal conditions. Of the three apps, INRIX is the highest-rated by customers on the iTunes store.