Query: In Some Places, Only Red Taillights are Permitted
Context: There are a few states in the US that only allow red taillights. The reasoning behind this law is that red is the color most visible to drivers at night, so it makes sense to have all taillights be required to be this color. Some of these states include Arizona, Arkansas, and Florida. There are also a few Canadian provinces that have this law, such as Ontario and Quebec.