The first scenario involves exclusive left-turn laneoperation while the other two scenario involve shared-laneoperation.
第一种情况考虑的是专用左转车道的运行，而另外两种情况考虑的是共用左转车道的运行。
2
Because expressway work zones for maintenance often need lane closure, it will result in road capacity bottleneck and impact the stabilization and safety of expressway operation.
The operation of the vehicles in the work zones is characterized by the redistribution of the traffic flow in the work zones, vehicles on the left lane priority and mandatory merging.