本文件总结了有关试验方法及其技术实施的现有知识，以及有关生物燃料桥接性能的现有知识。 本文件由以下三部分组成: -第一部分:直接确定桥接行为的方法，用于研发目的（见第4条）。 -第二部分:实施测量原则，以协助测试仪器的构造，并说明桥接测试的性能（见第5条）。 -第三部分:桥接试验的经验和结果，提供已测试的各种生物燃料桥接的典型结果（见第6条）。

This document summarizes current knowledge concerning a test method and its technical implementation, and existing knowledge about the bridging performance of biofuels. The document consists of three parts, as follows: — Part I: Method for direct determination of bridging behaviour, to make it available for research and development purposes (see Clause 4). — Part II: Implementing the measurement principle, to assist in the construction of test apparatus and to illustrate the performance of a bridging test (see Clause 5). — Part III: Experience and results from bridging tests, to provide typical results on bridging for a wide range of biofuels already tested (see Clause 6).