HRS §291-54
How to display a disabled parking placard or permit
This section tells you how to display a disabled parking placard or permit while using it. You must hang it from your rearview mirror so it's visible from the front and back. If that's not possible, put it on the dashboard.
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The statute, as written — Display of removable windshield placards; temporary removable windshield placards; and disabled paid parking exemption permit
The placard or disabled paid parking exemption permit shall be displayed in such a manner that it may be viewed from the front and rear of the vehicle by hanging it from the front windshield rearview mirror of a vehicle when the placard or disabled paid parking exemption permit is in use. If the design or condition of the rearview mirror, or the design or condition of the placard or disabled paid parking exemption permit precludes hanging the placard or disabled paid parking exemption permit in a secure manner, the placard or disabled paid parking exemption permit shall be displayed on the dashboard.
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.