The other part I hate about the "Roadwork Speed Limits" is that they (well at least here in Tasmania) drop you from 110km/h to 80 km/h about 1 km from the start. Then 500m away drop you to 60 km/h, then 100m from the start down to 40 km/h. Then after the roadworks you tend to be at 60 km/h for almost a km the other way. I am sorry, but that is just frustrating, and does tend to make people disrespect the roadwork speed limit signs