The first thing I noticed was the "中道" placard on the front. On a transit vehicle, this might mean "Central Line". It also means something else.
From the Wikipedia article:
The Central Path, Middle Way or Middle Path (Pali: majjhimā paṭipadā; Sanskrit: madhyamā-pratipad[a]; Chinese: 中道 zhōngdào; Japanese: 中道 chūdō) is the term that Siddhartha Gautama used to describe the character of the path he discovered that leads to liberation.There's not much in English about this, but there is a bit in Japanese.