I'm playing the new DLC on rapid transit first scenario called rapid transit. All brakes are off. Pushing the lever to add power results in nothing. No ampage. I have to slide the lever to and thro before it finally registers and ampage moves as does the train. At least 3 times sliding the power lever before it registers. Is this a fault or am I doing something wrong. As a result I'm always late in setting of and late in arriving.
I found that if I try to leave the station before the doors are fully closed and the alarm stops beeping, it locks out the throttle. I then have to do the same thing you were describing by moving the throttle back to brake, then back to throttle. When I waited for the doors to completely shut, then throttled up it worked. There is a small delay from throttle to amps starting to ramp up. Hope this helps.
Try this , as soon as train stops at platform , move brake lever to zero as it releases the brake preasure , an soon as you can shut doors ding the bell twice and you should see the amps ramp up , if not set back to zero power and try again , good luck