exit_idIntegerThe associated Exit's ID
distanceDoubleThe distance, in miles, from the POI to the end of the Exit's off ramp.
turn_direction_shortStringL or R
turn_direction_longStringLeft or Right

On the POI Details page below, you will see where the Exit Mapping information is used. In the dark green bar below "Exxon" it says "Left (W) 0.32 miles". The "Left" comes from turn_direction_long; the "W" comes from cardinal_direction_short; and "0.32" comes from distance.


The POI Details page for an Exxon as seen in the iExit Android app. Here you can see Exit Mapping information in use.