(27-08-2010, 01:53 PM)cgallafant Wrote: From the York Study Group, eventually there should be four attempts from us.
Compare and contrast TWO of the following methods of control that a signaller may use to operate a railway:
a) Written orders and verbal communication
b) Mechanical lever frames
c) Entrance-Exit type route-setting panels
d) Video display unit (VDU) based systems
In your response discuss the level of safety and degree of functionality that the systems being compared offer and the ergonomic (human factors) interface to the user. [20 marks]
Describe how the methods of control being compared are adaptable to infrastructure changes or changes to operating arrangements. [5 marks]
I am afraid that I consider both attempts at this question quite weak, though IP
PJW