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Details for Request 4-70
| Request Type: |
Experiment |
| Requesting Agency: |
Michigan DOT |
| State: |
MI |
| Date of Request: |
6/7/1985 |
| Topic: |
Flashing Circular Red for Permissive/Protected Left-Turn Phasing |
| Affected Portions of 2009 MUTCD: |
Section 4D.19 |
| FHWA Ruling: |
8/20/1985 – Approved request to experiment, with conditions, for inclusion within an FHWA research project on various protected/permissive left turn displays. 8/7/1991 – Terminated experiment due to research report showing no benefit over standard displa |
| Approval Status: |
Approved |
| Keywords: |
Traffic Control Signals |
Contact Information:
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