try smart city ideas

May not workable The safety island or "turn around"? may add some chair and table to let citizens spare their time sitting there? If so,  camera is needed to ensure no people sleep there. Filled concrete Bollard surrounds the island ti ensure no car crash.  And may design some method to pass carriageway such as: 1. Temporary "stop" light system when pass the bottom.  2. Tunnel 3. Bridge Some school playground would be opened? In holiday for some citizens leisure purpose? 

英時代？ Actually,  for any shelter design, You can add a pipe upon and let the water fall to reduce the heat, the collected water if proper used in drainage can be used to nurture golden fish.  HK smart city idea.