The ratings for Haunted Highway from 2012 seem to be fluctuating between average and decent. It started with an average rating of 7.0 for Season 1 Episode 1 and gradually increased to a decent rating of 8.0 for Season 2 Episode 1, but then dropped down to a below-average rating of 6.8 for Season 2 Episode 5. Based on the data provided, it seems that Haunted Highway is getting better overall, with some fluctuations in ratings. As a bingeable rating, I would give it a 75.