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Evaluation of Alternative Truck Lane Management Strategies Along a Section of I-81

机译：沿I-81区划的替代卡车车道管理策略评估

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摘要

I-81 is one of the top eight truck routes in the U.S. In the state of Virginia, I-81 traverses 325.51 miles from Tennessee in the south to the West Virginia border in the north and passes through 12 counties. The highway was designed for a 15 percent truck volume, however trucks now account for somewhere between 20 to 40 percent of the total traffic volume. In 2001, the Virginia Department of Transportation (VDOT) developed a list of key improvements for I-81. Some of the key findings of the study were: (1) 2004 traffic volumes will nearly double by 2035; (2) Nearly the entire corridor needs additional capacity by 2035; (3) Estimates of future traffic volume do not support building two additional lanes in each direction for use only by trucks. Such a design would provide too much roadway capacity for trucks and not enough capacity for cars; and (4) Up to 37% of I-81 requires one additional lane in each direction, while much of the remainder may need up to two additional lanes in each direction to handle future traffic.

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