Direction Labels Toggle

The "Direction Labels Toggle" turns the direction label ON and OFF.

The standard TIAH intersection volume symbol is divided into four "quarter circles", corresponding to the cardinal geographic directions - North, South, East, and West (note that North is always "up"). Each quarter-circle is used to display intersection approach volumes, e.g. assuming North is up, the lower right-hand quarter-circle displays volumes for the northbound left-turns, throughs, and right-turn-turns.

For visual clarity, the quarter-circles are labeled as follows (see sample image below):

NB - northbound traffic

SB - southbound traffic

EB - eastbound traffic

WB - westbound traffic