Groper Train: Danger Signal (1986) is a Comedy, Drama film that follows the pub Muhomatsu is located next to a prison. Love and hate unfolds at the pub... Groper Train: Danger Signal is not currently listed with streaming providers in your selected region, but availability can change over time. It has a user rating of 2.0 out of 10 from 1 votes. Fans of comedy movies may also want to explore similar titles below.