According to the Port Authority, when you're crossing over the bridge from NJ to NY, or vice versa, and your EZ Pass is not ...

"This new tier (affecting 9% of transactions) is intended for drivers to take advantage of lower E-ZPass rates by ensuring their Tags are mounted properly on the vehicle windshield for accurate ...

Mount the transponder flat on the top of the dashboard. It works fine there and does not fall off or obscure the view. If you can’t stand the transponder on the windshield, keep it in the pocket ...