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（四）在铁路、城市轨道交通线路上私设道口或者平交过道的。
，详情可参考同城约会
The 80386 introduced Virtual 8086 (V86) mode -- allowing real-mode DOS programs to run inside protected mode under OS supervision. While not full virtualization in the modern sense, V86 was the first practical hardware-assisted mechanism on x86 for running legacy software in a protected environment -- used widely in Windows 3.x and Windows 9x.
Now, the business averages $12,000 per month and is projected to see $400,000 in annual revenue.