Question

The government has proposed a LRT rail service from Putrajaya to Cyberjaya. The LRT line will be 10 km long, with stops for every 2.5 km. The LRT vehicle have an average acceleration of 5 km/h.s) and can reach a desired top speed of 80 km/h. Take coasting deceleration as 0.3 km/(h.s). Draw the speed versus time and speed versus distance diagram in between two stations for the following scenario: a) No coasting is allowed with maximum speed reached. b) Only one coasting regime before the breaking regime starts. c) Use acceleration-coast cycles to stay above 50 km/h until breaking regime is initiated. As an engineer, you are required to suggest the best option to the government and justify your suggestion.

declaration rate= 4.5 km/hrs

Answer 1

in which ace. started Distance 2.5o. 118 - 1.806 - One agai 439 ku. Speed at pt. =) braking u² (50)? + 2as 135.29 puuph - V = v2= + 2x 5 x 0.43943600 » p Bokniph- start for= 0.439-0-178 0.261 km. so, coasting cycle will is min. require mout best since, fuel is the Hence, 3rd