Name

Type

Description

to_exit_id

Integer

The starting exit_id on the intersecting highway that we can access from the current highway.

Eg: If we are traveling on I-65 North where it intersects I-40, there will likely be a path to merge onto I-40 Eastbound as well as I-40 Westbound. The I-65 exit for I-40 would contain two Junction objects, one with an exit_id for the relevant starting point of I-40 Eastbound, and another exit_id for the relevant starting point of I-40 Westbound.

highway_in_state

Highway In State object

The Highway In State that belongs to the to_exit_id exit.

In the above example, this would contain information for I-40, either East or West, and the state this occurs in (Tennessee).

As shown below in the iExit iOS app, Exits that have non-empty results for junctions are displayed different than normal Exits.

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Here are two examples of how Junction Exits are handled in the iExit iOS app.

At the top of this image, you see I-20 intersecting with I-285. This UI allows the user to select I-285 either Northbound or Southbound should the user plan to merge onto I-285.

At the bottom of the image is I-20's intersection with I-75/85. This is an interesting intersection because at this point, I-75 and I-85 are the same road. This is worth noting because iExit treats this as different Junctions. It treats I-75 North different than I-85 North, even though they are the same road at that exact point. This is why there are a total of 5 buttons for this Junction Exit.