Sharraxaadda

Palmero is blessed and cursed to have Hester's and Prices Chef. Despite this being a 20 mph, one way street, people drive insanely fast and often the WRONG WAY down the street. As the picture shows, the wrong was is poorly marked with only one, old faded do not ever sign. A speed bump is the only way to get people to slow down here because the 20 mph sign is clearly not working. Please give me any advice on what we can do to make our street safer.