Yes, it is possible to mount an E-ZPass transponder on a black dot. E-ZPass transponders are designed to be mounted on the inside of the vehicle’s windshield, and the black dots that you mention are typically located on the inside of the windshield as well.
The transponder can be mounted on the black dot using the adhesive backing that comes with the transponder.
It is important to make sure that the transponder is mounted in a location that allows it to be read by the E-ZPass reader as you pass through a toll lane.
The transponder should be mounted on the inside of the windshield, near the rearview mirror and at least 2 inches away from any metal or other electronic devices.
It is also important to avoid mounting the transponder on the dashboard or any other location outside of the vehicle, as this may interfere with its performance.
If you have trouble mounting the transponder on the black dot or have any other questions about using E-ZPass, you may want to contact the E-ZPass customer service center for assistance.