They made a bridge one way by me. Despite two neon advisory signs, two no entry signs, the road markings being changed, some road furniture blocking one lane, for weeks after it was done, drivers were still going the wrong way over the bridge. Some actually realized their mistake and reversed back, most did not. Now it actually has a permanent blockage on one lane and a big fark off no entry sign where even the doziest twat can't miss it. I'm happy to say I noticed it immediately, so whilst I'm still a twat, I'm not yet a dozy twat.