OAR 733-030-0450. Special Requirements — Interstate Highways and Expressways

If Ramp Logo Plaques containing the Supplemental Message “OASIS” are not used on the exit ramp, a Trailblazer with a white reflective legend (minimum 6 inch letters) and border on a blue reflective background may be provided on the exit ramp to indicate the direction and distance to the Interstate Oasis, unless the Interstate Oasis is clearly visible and identifiable from the exit ramp. Additional Trailblazers may be used, if determined to be necessary, along the cross road to guide motorists to the Oasis.