The Highwayman isn't a ballad. It wasn't written to be sung. Yes, it is a narrative (as all Balads are), but narrative poems aren't always balads. Also, balad has a specific rhyme scheme pattern of abcb and is also a quatrain. The Highwayman isn't either of those.
The Highwayman is a ballad that is written by the famous poet Alfred Noyes. This poem is divided into two parts. It revolves around the story that contains both love and suffering. For poetry fans, this poem is indeed a masterpiece and a great treat. This is a ballad which first got published in the year 1906 in the month of August.
Vivid imagery has been used in this poem for the background, and to create an image of a man riding through rural areas in darkness. Indeed, this dramatic masterpiece does its job pretty well and encompasses its readers/listeners fully.