This UR reports that “Gordon St right turn from Renfield st not allowed”.
roadworksscotland.org shows one issue there, “Widening of footways for Physical distancing”.
I’ve asked the reported for further details.
Thanks.
I’ve mapped the right turn ban, I think. I would suggest you may wish to contact GlasGow City Council and ask for a detailed list of changes due to Covid-19 measures, this news article suggests it has been implemented across the city centre.
More detail may be found at https://www.glasgow.gov.uk/spacesforpeople