Table of Contents
International Journal of Vehicular Technology
Volume 2012, Article ID 532568, 8 pages
Research Article

StopWatcher: A Mobile Application to Improve Stop Sign Awareness for Driving Safety

Department of Computer Science and Engineering, New Mexico Institute of Mining and Technology, Socorro, NM 87801, USA

Received 30 June 2012; Accepted 30 November 2012

Academic Editor: Nandana Rajatheva

Copyright © 2012 Carl Tucker et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Stop signs are the primary form of traffic control in the United States. However, they have a tendency to be much less effective than other forms of traffic control like traffic lights. This is due to their smaller size, lack of lighting, and the fact that they may become visually obscured from the road. In this paper, we offer a solution to this problem in the form of a mobile application implemented in the Android platform: StopWatcher. It is designed to alert a driver when they are approaching a stop sign using a voice notification system (VNS). A field test was performed in a snowy environment. The test results demonstrate that the application can detect all of the stop signs correctly, even when some of them were obstructed by the snow, which in turn greatly improves the user awareness of stop signs.