For instance, in Road Character, the distinctions amongst differing types of straight streets looked as if it would don't have any effect on Crash Score, so these were grouped with each other as straight roads, and in the same way for curved streets. 数据介绍部分首先要说明数据的记录数和来源（supply、time span），这两点是必须要的。接着说明数据的完整性，是否有lacking benefit、questionab... https://essayv.sg/%e6%96%b0%e5%8a%a0%e5%9d%a1%e7%90%86%e5%b7%a5%e5%ad%a6%e9%99%a2%e8%ae%ba%e6%96%87%e4%bb%a3%e5%86%99/