I don't have any problems with bi-lingual signs, and after 25 years living in Wales I can read/understand the Welsh on road signs and at stations as well as the English. Similarly, I can follow the Welsh announcements at stations. It doesn't take much effort to learn, and in fact kind-of happens subconsciously when it's everywhere- which I suspect is part of the whole argument for doing it. I think issues about "difficulty of reading it" are perhaps more often a result of a low reading age (in some workforces where surveys have been done, the average reading age is worrying low- around 9 years old).
What I do take issue with however is when the Welsh Government in their ineptitude are unable to put useful/accurate information about closures on their expensive electronic signs. Whether it's "A456 Ar Gau Bryn-Gil" or "A465 Closed Bryn-Gil" I understand it- but it would be really good if it was displayed on the electronic sign on the A40 prior to the Abergavenny turning, rather than less than 2 miles away from the closed section
. Ditto bilingual websites- having traffic websites in 2 languages is great, but only of any use if they contain accurate information.
For those who are not aware, there has been a series of road closures at night on the roads into south Wales for months now. Coming back to Wales in the evening, a mix of closures of M4 at Brynglas tunnels, J26, J23a, J33 and A465 at Gilwern can make for an "interesting" trip, particularly if you are not a regular and haven't seen the small yellow signs at the closure location a couple of days previously, these are often the only warning of a pending night closure, generally from 20:00 to 06:00. Many of the closures are either not on the Wales govt highways info site at all, or described on there inaccurately (e.g. having a closure on M4 booked as WB whereas it turns out on the night to be EB). This week was a case in point- the only warning that the A465 was closed Brynmawr to Gilwern from 20:30 last night was some small yellow signs at the roundabout where the closure starts- I saw these Wednesday evening- however the closure was not on the Traffic Wales website "forthcoming roadworks" page on Thursday.
Over the past few months, I have vastly expanded my knowledge of local routes in the area and found some really nice villages from diverting around the closed sections (often on routes which are not official diversions). For a tourist coming into Wales however, I would suggest that the poorly-thought through and inaccurately-publicised or not-publicised road closures are far more of an off-putter.
As an aside, apart from accurate info, what the Wales Govt needs to do for road closures is learn an old Railway thing and have some "Rules of the Route" so that you cannot (for example) close both the A465 WB/A470 SB and the M4 westbound Jn 25-27 at the same time...... JMO tho.
TPO