TIL that the red lights on top of tall buildings in cities are called “aviation obstruction lighting,” and are used to help pilots of low-flying aircraft avoid collisions with otherwise hard-to-see structures. en.wikipedia.org Submitted by bearjew64 t3_123n88j on March 27, 2023 at 1:39 PM in todayilearned 33 comments 77
Shoopdawoop993 t1_jdvxla3 wrote on March 27, 2023 at 4:19 PM TIL that the red lights at the back of motor vehicles across the globe are called "tail lights" and are used to help drivers of low flying automobiles avoid collisions with other otherwise hard to see cars. Permalink 11
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