PS5 Arrow Iii: Train Stop Penalty Alarm Beep Doesn't Stop (solved)

On the 8:52 service from Hoboken to Gladstone, there is a red signal just outside Newark Broad Street, and as I was crawling towards it under 5 mph, the train stop alarm went off and the train stopped. I acknowledged it many times and put the brakes at emergency, but it kept going. Then I put the brakes to handle off and the cut-off valve to off. After that the alarm was gone and the brakes released, but the ear-piercing beep continued. Turning off safety systems didn't help, and I had to quit the game. This is now the second time this has happened on the same spot. Either I don't know how to turn off the alarm or it's a game breaking issue.

 

After testing it again, it seems like putting the brakes to suppression makes the beep go away.