Commentary for Avodah Zarah 106:14
בימוסיאות של מלכים הרי אלו מותרות: וכי מפני שמעמידין אותה בשעה שהמלכים עוברין מותרין
Pedestals of kings are permitted. Because they set them up at the time the kings pass by they are permitted!
Daf Shevui to Avodah Zarah
Yohanan explains why the pedestals set up for kings on the side of the roads are permitted. These are only temporary pedestals. As soon as the king takes another road, the old pedestal is abandoned, and thereby annulled.
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