robroy:
Hmmm… not sure I would say totally ‘‘Not to bother’’
, like I said I’ve used a standard sat nav since 07.
I admit to saying about overpriced truck ones, I’d say if anybody NEEDS (literally) that level of guidance to use a truck, then in my personal opinion they are in the wrong job and are a danger to themselves as well as everybody else.
I’ve also maybe advised a newbie to consult a map (paper, google or otherwise) to gain a geographical knowledge of the country they intend to drive in, rather than just switch it on and follow it.
How many times do you hear ‘‘It sends me this way’’
, …it ‘‘sends’’ you no bloody where, YOU are the driver 
How many of these guys could give directions to another driver, or in fact actually know which bloody direction they’re actually travelling themselves. 
Way I see it is using a sat nav totally without consulting another back up/assurance method in the first year of doing the job is like trying to learn a toddler to run before taking his first walking steps… it’s all about actually LEARNING the job in the true sense of the word. 
Then, and maybe then we wouldn’t have so many chimps let loose on artics, and hitting bridges and the like.
BUT… on the other hand, and for arguments sake…Would you say that the chimps are actually safer with the bridge heights put in their sat navs, a kind of ‘‘false safety’’ is that as good as a safe pro driver who knows what he’s doing…A subject for discussion eh?.

No argument from me on any of that Rob especially as I was told last year by a young lad I was giving directions to get with the programme of “paperless navigation”.
I had never heard the term before but he, like most of his generation, was completely satisfied it was the best way just like recycling and online banking and I wondered briefly if I was just slow to adapt.
Amazingly he couldn’t use my map very well at all so I don’t think we will ever change their minds about maps but as you mentioned the whole bridge smacking thing has become a complete joke.
Modern trucks and Satnav have dumbed down the job quiet a bit except for bridge heights and load security which are catching out the weakest links more frequently I reckon.
I agree with you that the Satnav needs to smarten up on bridge heights as it’s loyal and devoted followers are becoming unstuck far too often. Actually make that stuck!
If they were my bridges I would erect a sturdy Shear Bar (we can call it a Chimp Bar
) from one side to the other about a yard in front of the bridge and an inch lower.
The carnage would continue of course but no more bridge strikes, cancelled trains or huge insurance claims.
The alternative of charging proper rates and being able to pay proper wages to proper drivers seems to be last thing on the industry’s mind unfortunately 
And God forbid if I do hit one some day I think I will die of the humiliation 