轻轨交通对沿途经济的影响

目前我国许多大城市正在筹备修建城市轻轨交通系统，以解决日益突出的交通问题；城市轻轨交通系统会影响人们的出行选择，引起出行成本的变化；通过考查出行成本函数的性质，发现了出行成本变化会引起产业分布区域的变动，从而得出了轻轨会对沿线地区经济产生聚集扩散作用的结论；综合考虑诸如发展潜力、经济基础、运费、信息及风险成本、舒适、行政区位和交通区位影响地区产业布局的各种因素，用AHP方法建立了衡量轻轨对沿途地区经济影响的评价指标体系。一个地区制定规划时，运用该指标体系，可以分析衡量轻轨交通对自身经济的影响程度，以便于抓住机会，优化产业布局，提高竞争力。

Model About Aggregation and Spreading Effect Brought by the Lightrail

Many cities are planning to build up the lightrail in order to solve their traffic jam.We try to find a function to describe the going-out cost and analyse the character of this function.The conclusion can be reached that lighrail can make aggregation and spreading effect on the economic activity in the district along the lightrail transit line because the change of cost brought by the lightrail traffic system lead to redistribution of the product region. Synthetically considering factors which can impact this aggregation and spreading, via applying the method of AHP, we set up an evaluation system which can be used to measure the economic effect brought by the lighrail.