I have attempted question 4 (written question) from the 2004 paper. All comments welcome.
For the benefit of anyone reading this who does not have the 2004 paper to hand the question was:
It is intended to introduce a new signal aspect/indication , for use in a degraded mode system, into the 'catalogue' of aspects/indications displayed to the train driver.
Discuss the factors that need to be taken into account when determining the characteristics of such an aspect/indication and the process leading up to its introduction into service.
For the benefit of anyone reading this who does not have the 2004 paper to hand the question was:
It is intended to introduce a new signal aspect/indication , for use in a degraded mode system, into the 'catalogue' of aspects/indications displayed to the train driver.
Discuss the factors that need to be taken into account when determining the characteristics of such an aspect/indication and the process leading up to its introduction into service.