There is no way to turn it off as it's part of the signalling system. I haven't had any problems with the timings in Harlem though, seems fairly generous.
#M7a speed limiter
queen palm
tired badge
That’s the ATC. The switch behind and above you can turn it off so you don’t E-Brake when going above it, but that’s not realistic
queen palm
That’s the ATC. The switch behind and above you can turn it off so you don’t E-B...
But you still get less AP for going above the speed, which as far as I understood was OP's problem
tired badge
But you still get less AP for going above the speed, which as far as I understoo...
Gotcha, my mistake