Ok it may help if you put some numbers in this......what % of CCTV cameras on any given day are not fit for purpose on that day ?
It isn't something I can put a figure on. How can I when that isn't something I would even have access to. It's very specific information that will require someone with very very specific knowledge for that.
What I can say is that on routes that I drive, where I discover a broken DOO monitor, I report it straight away, without fail. Where I am metro based I can often run the same trip up and down all day. I will, on many many occasions come back to the same set of DOO monitors only to find they are still defective. Sometimes the next day too. I have no expectation they will be fixed within the hour and generally most are fixed within a day. However; the same set can be out for most of the day and I can count the number of times on one hand where I have been told, in advance, about dispatch issues.
Consider the metro area and how many services will stop at that set of monitors. We simply do not get told in advance and find it after you stop. Allowing services to stop at broken dispatch monitors without prior warning should not happen, or be allowed to happen, however; it does.
I can tell you for a fact, although hard to prove, that a set of DOO monitors was not aligned to see the entire length of the platform and when we moved to 12 cars part of the unit was not visible. Yet, even after it was reported, services were allowed to stop there. It took ASLEF/RMT intervention to get that rectified. The TOC did not tell Drivers and allowed services to stop there.
There are a few stations on my TOC where dispatch has been a regular issue and yet nothing is ever done; until there is an incident.
About 2 weeks ago I reported an issue with 700 DOO Cab monitors. Guess what ? Siemens blamed GTR and nothing has been done. Reported, no action currently taken.
Someone attempted to dispatch me WITHOUT a dispatch license. I reported it. NOTHING WAS DONE !!! It also continued to happen to other Drivers and it again took ASLEF/RMT intervention before the TOC done anything about it.