Frenchy - DPEA used to be the Directorate of Planning and Environmental Appeals. It changed name a while back, but kept the same acronym.
Anyway, this is standard practice. The Local Authorities' Traffic Regulation Order (Procedures) (Scotland) Regulations 1999 requires an inquiry to be held into a TRO where there are outstanding objections (i.e. the objector won't withdraw an objection after negotiation with the authority) where the TRO would:
prohibit loading or unloading of vehicles:
(i) at all times
(ii) before 07.00 hours
(iii) between 10.00 and 16.00
(iv) after 19.00
or if the passage of public service vehicles would be restricted or it would create one-way streets.
All inquiries into a TRO are handled by a Repprter appointed by the DPEA. The Reporter conducting the inquiry will produce a report and recommendations for the authority, which is required to consider that report before deciding whether to proceed with the order. Generally, the authority will stick to the recommendations made by the Reporter, as failure to do so could leave them open to a legal challenge.