四、路线设计的基本要求公路路线设计的基本要求,主要包含两个方面的问题,一是路线走向方面要考虑的一些问题,一是线形设计方面的一些问题。而这两方面的问题又是紧密联系在一起的,不能截然分开的。以往路线设计主要是靠实地定线,只要工程量最少,造价低廉,而在平面、纵断面以及其他指标都符合标准,就算提供了经济适用的公路。这种做法满足了当时的交通需要。从今后交通发展看,从新《标准》提出的要求看,这种做法就显得不够了,需要提 Fourth, the basic requirements of the route design The basic requirements of the route design, mainly contains two aspects, one is to consider some of the problems in the direction of the line, one is the linear design of some of the issues. The two problems are closely linked and can not be completely separated. In the past, the route design was mainly based on the field alignment. As long as the project volume was the least and the construction cost was low, even if the plane, the longitudinal section and other indicators are in line with the standards, the economical road is provided. This approach to meet the traffic needs at the time. From the perspective of transport development in the future, from the requirements set forth in the new “standard”, this approach seems inadequate and needs to be mentioned