17 The Gresham Branch railway corridor has an up track and a down track. Two passenger service lines operate downward on this corridor; HIL-GRE and VAL-GRE. The downward terminus of Gresham is at km 13.450 with Platform 1 adjacent to the up track and Platform 2 adjacent to the down track. Platforms 1 and 2 are side platforms. Between km 13.140 and km 13.210 is a two- way arrangement of turnout, crossover and diamond crossing crossingwork assemblies. There is no other crossingwork between km 12.400 and km 13.140, or downward of km 13.210. All downward trains approach km 13.140 on the down track, while all upward trains clear km 13.140 on the up track. HIL-GRE trains terminate on Platform 2 while VAL-GRE trains terminate on Platform 1. In your work booklet neatly draw a schematic of the Gresham Branch railway corridor between km 12.400 and km 13.450, showing all crossingwork and platforms as well as the up direction. On your schematic show the movement of a train that services the VAL-GRE passenger service line, then terminates, turns back, and originates to service the GRE-VAL passenger service line