Is it permitted to perform a reverse manoeuvre on an express road?

No, there is an absolute prohibition on reversing on an expressway. The D-7 "expressway" information sign visible on the right confirms that you are on this type of road. According to Art. 23 para. 2 of the Road Traffic Act, this manoeuvre is forbidden, just as it is on a motorway. Reversing in such conditions is extremely dangerous due to the high speeds of other vehicles.