Incidentally, the website is a good example of the notorious bad usability of government-run websites their form expects you to pinpoint the exact intersection where you have failed to pay a toll I tried and failed to find what they had in the system matching my license plate, and wrote a contact asking for help identifying any tolls not paid.

The first time, when things were stuck on 'STOP', I went to the website to pay late tolls. My iPass is wedged between the front of the dashboard and the front of the windshield, which should register as being in plain sight to the machines that read them. But I think I've seen at least one case whether neither yellow nor blue light lit. I went through, and subsequent tolls gave me the blue (i.e. I went through one 'pay by coin' lane and stayed, with the lights stuck on 'STOP' and never changing to 'GO', until there were cars building up behind me. Recently I've noticed a couple of apparent failures in using it. I have an iPass which has been on an even keel for ages.

How to return ipass transponder