A,
One of the useful aspects of modern police sirens
IS the unpredictable source direction
a) the crooks don't know which way to escape
b) law-abiding citizens like you and me will be extra-cautious and take care, looking in mirrors, looking left and right etc to avoid obstructing them or causing collisions
Unfortunately, some folks don't pay attention and get in the way. I'm not saying it's their fault.
Sorry for posting an on-topic message, but I can't resist dumb
Why? questions
Hmm, I must visit the
Why? thread again....
John