Editing Stop sign (section)

====On school buses====
{{Main|School bus traffic stop laws}}
[[File:Thomas School Bus Bus.jpg|thumb|An American [[school bus]] displaying front and rear folding stop signs]]
A stop sign on a pivoting arm is required equipment on North American [[School bus#Warning lights and safety devices|school buses]]. The sign normally stows flat on the left side of the bus, and is deployed by the driver when opening the [[Bus doors|door]] for picking up or dropping off passengers. Some buses have two such stop arms, one near the front facing forwards, and one near the rear facing backwards. The stop sign is retroreflective and equipped either with red blinking lights above and below the '''{{smallcaps|stop}}''' legend or with a legend that is illuminated by [[Light emitting diode|LEDs]]. Unlike a normal stop sign, this sign indicates a two-way absolute stop, requiring other vehicles travelling in both directions to remain stopped until the sign is retracted.{{Citation needed|date=May 2020}}