Using Dual-Phase Message Signs to Display Airline InformationStatus: CompleteReport Date: 03/05/2010 Summary: Researchers used a driving simulator to compare the use of overhead dual-phase to multiple static Changeable Message Signs for effectiveness in conveying airline information to highway drivers approaching the Minneapolis-St. Paul International Airport. Researchers found that the two methods were equally effective. Final Deliverables: Comparison of Dual-Phase and Static Changeable Message Signs to Convey Airline Information on Interstate Freeways (Report #2010-02) Using Dual-Phase Message Signs to Display Airline Information (Research Summary) Related Materials: Related Research: