This has never happened to me before. Scenario "There and Back Again." Everything starts off jolly, but as soon as I pass about 25 mph or so (speed limit is 45), the alarm goes off and I get an emergency braking. Signals are high green all the way. Lather, rinse, repeat. WTH is going on?
I am afraid Sherman Hill's in-cab signaling and safety systems are partialy broken. I had problems too.
Yeah, safety system is bugged on Sherman Hill and often will penalty brake over 25 MPH. It's a known issue, it gets wrong info from the real signals and registers a restrictive one. My advise is to turn off the safety system and only turn on the alerter until it's fixed.