This picture was taken outside a driving school close to where I live. Take a good look at the English. Do you see anything strange?

I often hear people in Japan say things like, "I'm a safety driver," or "I like safety driving." Well, sorry, I but I have to tell you that safety driver or safety driving is not correct English. What you should say is: safe driver and safe driving.

Please remember this:

SAFE is an adjective - He is a safe driver.
SAFELY is an adverb - He always drives safely.
SAFETY is a noun - He is always concerned about the safety of his passengers.

However, SAFETY can be used before a noun in some expressions like:

• safety belt - 安全ベルト
• safety zone - 安全地帯
• safety device - 安全装置

In these expressions safety means something like "made for the purposes of safety" 「安全のために作られたこと」。