Except they aren't half empty going Eastbound as there is also a humungous queue there too. Also, because of the choice to travel to Wivelsfield and further north either via Lewes or Brighton, the time spent queuing is, to an extent, self-regulating towards equilibrium.
So true. It's the equivalent of being stuck in a traffic jam rather than driving a longer route and arriving at a similar time. People psychologically hate queuing because they feel helpless and like they aren't getting anywhere.
The queues up the ramp and across the bridge to the eastbound...