No issues with the dev, as the app designed by him is perfectly fine, but i was only clarifying about the speed. As the track permits only 150, so it can go marginally above i.e. 151 or max 152 but it cant go upto 155 or more, as then the lp would be liable for penalty which can be as harsh as losing the job.
So 155 speed calculated by you as per the speed calculator was incorrect.
Thats it.