

To install a roof-mounted transponder, you must drill a hole in the roof. The vehicle classification will change if you drive a 3A axle bus, 3A axle truck, or an 18-wheeler with double trailers. However, if your vehicle is a regular one with 2 axles and 4 tires, you can still use a basic transponder. Below is a picture of a windshield mounted IPass transponder: The roof mounted transponder and the roof mounted transponder look the same but the roof mounted transponder has an extra piece to it. If you own a large vehicle such as an 18-wheeler, you will need a new transponder. Pictures of license plate mounted transponder:įor large commercial vehicles, such as trucks, buses, coaches, RVs and trailers, the roof-mounted transponder will be recommended. In addition, the following are vehicles that require IPass license plate transponders. Only 1% of cars have windshields that block transactions with windshield-mounted transponders. Therefore, a license plate-mounted transponder is required for electric cars. Windshield-mounted transponders don’t work with electric cars like Teslas.
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You can check out my other post on purchasing an IPass if you want more details about how to purchase an IPass.ĭifferences between the three IPass transponders On the other hand, t he headquarters of Downers Grove is open Monday through Friday from 8am-5:30pm Central Time. They are both open from Monday through Friday from 10 AM to 5:30 PM Central Time. The t wo tollway oases currently open are the Belvidere and Lake Forest oasis. If you want to purchase an I-Pass license-plate-mounted transponder or a roof-mounted transponder, you can go to the two tollway oases that are open, order online on, order by the I-Pass customer service phone number (80), or you can go to the Downers Grove headquarters. However, for most people’s vehicles a windshield-mounted I-Pass transponder will be sufficient. You can buy an I-Pass a t Jewel-Osco and Road Rangers but they only sell windshield-mounted I-Pass transponders. There are five ways to purchase an I-Pass and there are three different types of IPass transponders which I describe in the next paragraph.
