Channelization and Lines of Drift
Most major routes out of major cities will be very dangerous places to be in the event of a massive involuntary urban exodus. Imagine the situation WTSHTF in small towns on either side of the Snoqualmie Pass in Washington, or near I-80 across the Donner Pass in California, or on the Columbia River Gorge (dividing Oregon and Washington), or virtually every other stretch of interstate freeway that is within 150 miles of a metropolitan region. These channelized areas (also called “refugee lines of drift” by Military Police war game planners) should be studiously avoided. Conversely, there are areas between lines …