Romer1 wrote:
Illinois I Pass has mounting instructions for vertical windshields hereVertical windshield IPass mounting
1-2" from bottom, near center. Works finee, mine was reliably read in IL, IN OH & NY. Would think EZPass would work same.
i see in those instructions they also offer the LICENSE PLATE mounted transponder for those that might have problems w/ the windshield based transponders.
I don't know about the OP's tag, but ours are more like STICKERS w/ a lower power transponders than the older style plastic boxes.