Adaptation Strategies for Managing Recurring Congestion—Adding New Capacity - Road Traffic Congestion - page 238

Fig. 17.3 New Jersey “ Jughandle ” concept

Fig. 17.4 Michigan U turn left turn movements. Source Reference [ 6 ], p 47, Fig. 13. Primary
source: Reference [ 7 ]

the directional median crossovers are well documented. Directional crossovers
experience one-third the crash rates of two-way left turns and about two-thirds the
rate of bi-directional crossovers [ 8 ]. A study by Koepke and Levinson [ 9 ] found a
gain of 14 18 % in capacity as compared to conventional intersection designs with

dual left turn lanes.

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