Machine Design

Stack lights

Stack lights Werma modular stack light systems from AutomationDirect come in 50 and 70-mm sizes and allow for a combination of optical and audible signal Werma modular stack light systems from ...
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What are the lights placed above traffic signals in Pennsylvania?

PENNSYLVANIA (WHTM) — On many traffic signals found throughout the United States and Pennsylvania, there is a small light that is placed in between or off to the side of the traffic signal lights.

Noticed Blue Lights Above Traffic Signals? There’s a Reason

Small blue lights are quietly appearing above intersections in several states, helping police catch red-light runners while keeping intersections safer.
Machine Design

Stack lights

Werma modular stack light systems, in 50 and 70-mm sizes, allow for a combination of optical and audible signal elements. Werma modular stack light systems, in 50 and 70-mm sizes, allow for a ...