[>BKA< T Wrecks]

Not quite. If there's just one straight line, two friendly bots running in opposite directions will collide 99% of all cases. Then they'll do their little jump around and try to get unstuck-routine and continue.
If you have 2 parallel paths, this risk is much lower. Besides, if waypoints with huge radii are in a straight line, bots will nonetheless stick more or less to the waypoints themselves; they won't go along the outer edge of the radii - simply because it doesn't cost them any effort to keep close to the waypoints and there's no need (and, in fact, no opportunity) to turn left or right, unlike in open areas or near corners. Not to mention that with 2 parallel lines bots will not be forced to run simply straight ahead, but change sides from time to time, which might make things a bit more difficult for your average AWM kiddie that's lurking somewhere...