Thirdly, by combining with the reality of serving area enterprises at present and using logistics idea, have planned the logistics distribution system on expressway serving area in Hunan province.

Based on the "shortest path matrix", the author calculated the accessibility of the highway network in Hunan province in 1984,1993,2004 and 2025.

Statistics and analysis were conducted for car-to-truck rear impact accidents on highway of Hunan province.