This isnt a big Truss Arm...its only 8 Feet....and Yes im Aware that Texas Uses New M400R2 FCO's...as they have begun using those in Tyler around the Loop....most are standard Light Grey...one is black though.
More light goes towards the road when the socket is on the street side...as the light coming out of the tip of the lamp bounces on the reflector to the street....instead of to the house....No light comes out of the base...so it won't bounce to the house side if the socket is on the street side...
Texas also uses brand new M-400 r2s on these high truss arms. I have seen them.