Reducing the width of a road, either by reducing lane width or the number of lanes.

MLK’s current design psychologically signals to drivers that it’s okay to speed on it due to the lane width, number of lanes (3-5 in some stretches), limited uses loading onto it, and the large right-of-way and setback of uses on adjoining streets (there are some stretches where a zone about the width of the road separates MLK from buildings near it). Some of those things are good for an arterial road and its flow and safety (like loading of uses), but the execution here leaves something to be desired - especially since it was built gashing a hole and severing neighborhoods like 83 and 40 do. This is all doubled by the 395 exit simply becoming the lanes of MLK rather than meeting at an intersection, meaning traffic flows seamlessly from the interstate and if it doesn’t encounter a red-light at Washington Blvd might continue at highway speeds.

It is an easy candidate for protected bike lanes and/or a tram system, and in-fill development - all of which will reduce speeds and accidents. Studies on road dieting have shown a 19-43% reduction in accidents.