Sharraxaadda

Can something be done to slow traffic and/or help cars that are coming from market street safely turn onto Columbia or continuing straight? I continuously find myself creeping forward via Market St and still not able to see around the left corner onto Columbia. Cars don't always go slowly on Columbia especially if they're racing to catch the light at Broadway. A raised crosswalk would help slow cars down, helping both pedestrians and turning cars. Please help!