Jonathan E. Upchurch

Reducing Congestion at Grand Canyon's South Rim

William Byrne, Jonathan E. Upchurch, 2011 .

COMPARISON OF LEFT-TURN ACCIDENT RATES FOR DIFFERENT TYPES OF LEFT-TURN PHASING

Jonathan E. Upchurch, 1991 .

Signing Two-Lane Freeway Exits with an Option Through Lane in Extreme Conditions: Anatomy of Drivers’ Behavior

Hasmik Mehranian, Donald L. Fisher, Anuj K. Pradhan, 2004 .

Preserving a Historic National Park Roadway

Jonathan E. Upchurch, 2009 .

GUIDELINES FOR SELECTING TYPE OF LEFT-TURN PHASING

Jonathan E. Upchurch, 1986 .

EFFECT OF NON-OPTIMAL CYCLE LENGTHS AND TRAFFIC VOLUMES ON PROGRESSION

Gary B. Thomas, Jonathan E. Upchurch, 1998 .

REDUCING DELAY TO LEFT-TURNING AND THROUGH VEHICLES: A STUDY OF THREE SIGNAL CONDITIONS

Jonathan E. Upchurch, Tr Warne, 1992 .