Tactics

I read a book Hei-gaku. This book told us, how to war in old Japanese warrior’s time. It says that if soldiers attack enemy. The most important things is clockwise or anti clockwise. The turn will decide dead or alive.
I heard that truck drivers use this technique. They say that if the traffic is crowded to use anticlockwise is better. Most clockwise lane is crowded. Why does this thing happening. Which turn is good.
Most people turn anticlockwise, I think, but when clockwise lane will crowd.
This is my riddle.