单选题 · 选择一个答案
Which answer gives the most complete range of flashing warning-light colours used by pilot vehicles, including the first pilot for a very large load?
包括为超大型货物护送的首辆引导车在内，哪个答案最完整地列出了引导车使用的闪烁警示灯颜色范围？
Pilot vehicle warning lamps may be amber, or amber and purple.
引导车使用的闪灯可以是黄色，或黄色与紫色的组合。
阅读相关知识
Not every pilot has both colours. Slow, observe and follow safe directions around overdimension transport.
不同引导安排的灯光不同，不能认为每辆引导车都必须同时闪黄紫灯；遇到超尺寸运输应减速观察并按现场安全指示行动。