One of the luxuries of the digital photography age is the ability to make any photo black and white with the simple touch of a button during post processing. I usually try to refrain. B&W can improve many photos by drawing the eye away from distracting colors; back to the bare composition.
This shot would have worked great in color if it wasn’t for the jarring blue and white of the “Tsunami Zone” road sign clashing with the pale mists and pink glow of the sunrise in the sky. A compositional error to be sure; easily saved with B&W!