警告線是線條長而線距短的單行虛線，用以警告前面有危險。
A warning line is a single broken line with long markings and short gaps that warns of a hazard ahead.
警告線是線條長而線距短的單行虛線，用以警告前面有危險。
A warning line is a single broken line with long markings and short gaps that warns of a hazard ahead.