Temporary road work speed sign rules (Vic)

[T3rminator]

Just after some clarity on the rules (Vic) for temporary speed signs set up at road works.

My understanding is that you need to obey the temporary speed signs until the road work ends AND you see the next speed sign. But what if the road work has ended and the official road speed sign is not seen for some distance? Is there a distance limit before you can resume normal speed legally?

Eastern Freeway, outbound, normally 100kmh, is getting some road works done. Its 40kmh at a small section. After the road work ends, there is no temporary speed sign to go back to 100kmh, and the next official speed sign is not seen for a good 1km or so I'd say. Its a pretty **** scenario, some cars remain at 40kmh whilst others are flying past at 100kmh. Its a difference between losing your license or not.