The Block Signal (1926) is a Drama, Thriller film that follows joe Ryan, a veteran train engineer, is demoted to a flagman position after a disastrous crash-- one caused by his cowardly and opportunistic partner. Though Ryan's failing eyesight is named as the cause of the crash, he's undeterred as he designs an automatic braking invention. The Block Signal is not currently listed with streaming providers in your selected region, but availability can change over time. Fans of drama movies may also want to explore similar titles below.