The purposes of the study were: (1) to evaluate the new ramp design (exit and entrance ramps combined into one paved surface separated only by a double yellow line) using actual counts of wrong-way movements and comparing them to data collected in previous research, and (2) To make counts of wrong-way movements on about ten other combined ramps to determine if any have problems. A total of 17 ramps were monitored under the study. Three ramps were considered to have serious wrong-way count problems. On all three ramps, countermeasures were taken to reduce the wrong-way movements. Final conclusions are that the combined ramp geometry does reduce the number of wrong-way movements, but alternate forms of signing and marking may be needed.
Wrong-Way Movements on Partial Cloverleaf Ramps
1988
32 pages
Report
No indication
English
Operational Effects of the Displaced Partial Cloverleaf Interchange
Transportation Research Record | 2018
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