If you want to go to Nuuanu, you certainly don't need to go up Piikoi. But Honolulu is congested particularly since rush hour starts rather early and has no where to go except H-1 or using all are other streets as freeways.  The NO LEFT TURNS is infuriating if you live in town or are trying to do business during the early rush hour.  We can't keep accommodating commuters over everybody else..