How does 非机动车 (fēijīdòngchē) mean "bicycle"? In the road sign below, we have the following:

非机动车靠右行驶
fēijīdòngchē kàoyòu xíngshǐ


Which breaks apart as:

非机动车 = bicycle (with 机动 meaning &quot;mobile&quot;)
靠右 = keep right
行驶 = travel along a route

However, I'm not clear on how 非机动车 means bicycle.  Ordinarily, I would expect &quot;bicycle&quot; to be 自行车 (zìxíngchē), and I'm unfamiliar with this as an alternative.
Question: How does 非机动车 (fēijīdòngchē) mean &quot;bicycle&quot;?
It doesn't only means bicycle.

"非机动车" is non-motorized vehicle, NMV, including tractors,human cargo vehicles, animal-drawn vehicles, etc., according to the explaination of "非机动车" in Baidu Baike. 

So bicycle is only one sort of NMVs and is used to reprensent NMV on the sign because it's very common.