Journal of Transportation Technologies, 2021, 11, 561-576 https://www.scirp.org/journal/jtts ISSN Online: 2160-0481 ISSN Print: 2160-0473 DOI: 10.4236/jtts.2021.114035 Sep. 6, 2021 561 Journal of Transportation Technologies Evaluation of the Impact of Queue Trucks with Navigation Alerts Using Connected Vehicle Data Rahul Suryakant Sakhare 1 , Jairaj C. Desai 1 , Justin Mahlberg 1 , Jijo K. Mathew 1 , Woosung Kim 1 , Howell Li 1 , John D. McGregor 2 , Darcy M. Bullock 1 1 Purdue University, West Lafayette, USA 2 Indiana Department of Transportation, Indianapolis, USA Abstract Back of queue crashes on Interstates are a major concern for all state trans- portation departments. In 2020, Indiana DOT begin deploying queue warn- ing trucks with message boards, flashers and digital alerts that could be transmitted to navigation systems such as Waze. This study reports on the deployment and impact evaluation of digital alerts on motorist’s assistance patrols and 19 Queue trucks in Indiana. The motorist assistance patrol evalu- ation is provided qualitatively. A novel analysis of queue warning trucks equipped with digital alerts was conducted during the months of May-July in 2021 using connected vehicle data. This new data set reports locations of anonymous hard-braking events from connected vehicles on the Interstate. Hard-braking events were tabulated for when queueing occurred with and without the presence of a queue warning truck. Approximately 370 hours of queueing with queue trucks present and 58 hours of queueing without queue trucks present were evaluated. Hard-braking events were found to decrease approximately 80% when queue warning trucks were used to alert motorists of impending queues. Keywords Queue Trucks, Navigation Alerts, Connected Vehicle Data, Hard-Braking Events, Motorists’ Safety 1. Motivation Back of queue crashes are an emerging national problem and several states are exploring or deploying queue warning trucks to increase the alertness of drivers approaching stopped traffic on the interstate [1] [2]. The motivation of this pa- How to cite this paper: Sakhare, R.S., Desai, J.C., Mahlberg, J., Mathew, J.K., Kim, W., Li, H., McGregor, J.D. and Bul- lock, D.M. (2021) Evaluation of the Impact of Queue Trucks with Navigation Alerts Using Connected Vehicle Data. Journal of Transportation Technologies, 11, 561-576. https://doi.org/10.4236/jtts.2021.114035 Received: August 7, 2021 Accepted: September 3, 2021 Published: September 6, 2021 Copyright © 2021 by author(s) and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). http://creativecommons.org/licenses/by/4.0/ Open Access