本手册鼓励在测试和评估路边安全特性时保持一致。它包括斜坡上电缆屏障测试的新矩阵、对多个测试车辆尺寸的修改，以及更新的测试文件要求。

This manual encourages consistency in testing and evaluation of roadside safety features. It includes a new matrix for cable barrier testing on slopes, modifications to several test vehicle dimensions, and updated test documentation requirements.