Yes. Have you any points re the actual contravention signage?
When I looked at this thread in late December, I got the route wrong. Then when the OP confirmed his route, it became clear that there was an advance sign and the restriction signs, so they looked "adequate", see here: -
https://maps.app.goo.gl/72UKGDT54JQU2xFZ8I suppose one could argue about the adequacy of just putting up a Left Turn arrow; better to have a larger sign with the layout ahead indicating where to go.
