this is how I calculated speed in yuva express:
1) I saw the kilometer reading on OHE pole. For example, 135/4
2) I measured the time time it takes to reach the next exact kilometer, i.e. 136/4. Accurate measurement is made easy using stop watch in mobile phone.
3) If time taken was 'x' seconds, then the speed is 3600/x kmph.
In...
more... my measurement on yuva, it took 26.9 seconds to travel 1km. So, speed was 3600/26.9 = 134kmph