They have a clunky sounding name — "rectangular rapid flashing beacons." But the electronic crosswalk signs that have been popping up all over Tampa Bay in recent years have a clear purpose.

As you can see for yourselves in the adjacent photos, there are three available signals, just like in a regular traffic light: triangle-red-stop, rectangle-amber-stay, round-green-go.

The rectangular flashing beacons better known as the mid-block, flashing yellow pedestrian crossings, ... That's why the signals use an amber light, signaling caution, ...