- jokou going slowly (esp. to enable a vehicle to stop immediately), going at a reduced speed, slowing down, reducing speed
徐行 appears on Japanese road signs and in traffic rules, meaning driving slowly enough to stop immediately; it is not used for general walking or casual slowness.
この先、徐行してください。
Kono saki, jokou shite kudasai.
Please slow down from here on.
雨の日は徐行運転が安全です。
Ame no hi wa jokou unten ga anzen desu.
Driving slowly is safe on rainy days.
⚖️ Often confused with 減速 (gensoku), which means any reduction in speed; 徐行 specifically means slow enough to stop immediately.
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