An Oddity... Mechem Dr and Sudderth Dr

This was an odd Traffic Light to see in Ruidoso, NM. With a 3 section using a Red Arrow, Yellow Ball, and Green Ball. I don't know why this signal was made like that. And after looking at this intersection on Google Maps, it seemed it was a 3 section all straight-arrows!
#trafficlight #roadsigns #automobile
‪@TheTrafficTech‬ Maybe you could possibly explain this one for me?