I had this RoadSign as a gift a long time ago (in a galaxy far far away) but with time, it broke at several places and realised I could replace it. Here is its replacement. 

As it is supposed to be exposed, I suggest to smooth the latest layers of the print. (30mm/s and 10%). Without any fine tuning, this file is about 1h40min to be printed. If you have any question, please let me know. 

Thanks!