Home Resources Improving Safety By Providing All-Red Clearance Intervals And Larger Signal Lenses (FHWA-SA-09-014) Improving Safety by Providing All-Red Clearance Intervals and Larger Signal Lenses (FHWA-SA-09-014) Document Type Transportation Links Resources Resource Link https://safety.fhwa.dot.gov/intersection/conventional/signalized/case_studies/f…