Investigate the Effectiveness of Using Bluetooth Low Energy (BLE) Technology to Trigger In-Vehicle Messages at Work Zones Status: CompleteReport Date: 12/30/2016 Summary: Researchers developed and tested an in-vehicle messaging system using Bluetooth Low Energy (BLE) tags and a smartphone app to alert drivers on their smartphones when they approach a work zone. The app successfully detected the BLE signal from 125 meters away in a vehicle traveling 70 mph. While further research needs to be done to determine how to effectively implement the system, MnDOT hopes it can ultimately improve work zone safety by reducing driver distraction. Final Deliverables: Report #2016-38 Research Summary Related Materials: Related Research: In-Vehicle Work Zone Messages Disc Shaped Compact Tension (DCT) Specifications Development for Asphalt Pavement In-Vehicle Work Zone Messages: Examining Signing Options for Improving Safe Driving Behaviors in Work Zones Work Zone Intrusion Mobile Application