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Evaluation of ground mounted diagrammatic entrance ramp approach signs /
prepared by Helmut T. Zwahlen and Thomas Schnell.

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Main Author: Zwahlen, Helmut T.
Related Names: Schnell, Thomas.
Language(s): English
Published: Athens : Ohio Research Institute for Transportation and the Environment, Human Factors and Ergonomics Laboratory ; 2000.
Subjects: Interchanges.
Traffic signs > Traffic signs / Guide.
City traffic > City traffic / Ohio > City traffic / Ohio / Columbus.
Express highways > Express highways / Ohio > Express highways / Ohio / Columbus.
Traffic signs and signals > Traffic signs and signals / Ohio > Traffic signs and signals / Ohio / Columbus.
Traffic signs and signals > Traffic signs and signals / Research > Traffic signs and signals / Research / Ohio.
Note: Executive summary laid in.
"October, 2000."
Physical Description: ix, 73 leaves : ill. ; 28 cm.
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