Layby and Rest area

Layby noun - Designated paved area beside a main road where cars can stop temporarily.

Rest area is a synonym for layby. In some cases you can use "Rest area" instead a noun "Layby".

Rest area noun - Designated paved area beside a main road where cars can stop temporarily.

Layby is a synonym for rest area. You can use "Layby" instead a noun phrase "Rest area".