Three areas to address to help traffic flow: exit 13 north should have a separate right turn /stop/yield lane. The light at the zoo is horrendous. Maybe 5-7 seconds it gives the non route 9 traffic. Finally. The jug handle at 9 and ferry road. Keep it two lanes. People can change and lanes well after the light. It bottlenecks now with people trying to merge from two to one lane.