Is it possible to add an audible tone once passenger loading is complete for those who play without the HUD. Even better would be to implement the train guard's buzzer/bell to notify the driver that its safe to close the doors and proceed.
Yes a beep, beep/ buzz, buzz on modern routes and a good old blow on the whistle would be very useful along with doors being shut by the guard/station staff too. Great suggestion, which will hopefully come to fruition.
I agree to that. It always requires you to either look back at the HUD or wait longer than needed so you're sure the time is up. Players who play without HUD really need that feature.