While passing through the exact change lane, how does the system recognize the number of axles of the vehicle?

Question

The toll depends on the number of axles a vehicle has. So how does the number of axles get calculated?

Answer 1

It doesn't know, you're on your honor to pull up to the correct lane when you approach a toll booth.  Correct change lanes are for 2 axle non-commercial vehicles only.  If you pull up to a correct change lane and you have more than 2 axles, you can drop in your change and go, but don't be surprised if a state trooper quickly pulls in behind you and you get a nice hefty fine for not paying the correct toll.

Answer 2

they count the number of tires on one side