Near my house, there is a road with a 35 m.p.h. limit. For a while, it is a two lane road (one each side). Then, it opens up to a four lane road (two each side). Speed limit does not change. The driver that drives me crazy? Goes 30 in a 35, making me ride behind them (grrr)...then opens up to 45 when the road goes to two lanes (GRRR!!). It's still 35 asshole! If you were going to go 45, I'm good with that, by why weren't you doing it when it was a single lane, and it was more important for you to not block traffic?!