You want to overtake. What is the right course of action now?

Refraining from overtaking is correct because overtaking is only allowed when it is clearly permitted and can be completed without endangering or hindering anyone. In this situation, you are entering a section where overtaking is explicitly forbidden by a “no overtaking” traffic sign. From the moment you pass that sign, you must not overtake slower vehicles ahead, even if you think you could do it quickly.

That also explains why accelerating is wrong here: speeding up to overtake would tempt you into an illegal maneuver and can create a dangerous situation, especially if oncoming traffic appears or the road layout reduces visibility. Maintaining your speed (and keeping a safe following distance) is the safest, legally correct behavior: stay in your lane, drive predictably, and wait until the ban ends (usually indicated by an “end of no overtaking” sign) before considering an overtake again.

Rule of thumb for similar questions: if you see a no-overtaking sign or have unclear visibility (curves, crests, narrow roads, oncoming traffic), the correct decision is to cancel the overtaking plan and continue safely behind the vehicle in front.