Abstract
The number of pedestrian accidents continues to keep climbing. Distraction from smartphone is one of the biggest causes for pedestrian fatalities. In this paper, we develop SaferCross, a mobile system based on the embedded sensors of smartphone to improve pedestrian safety by preventing distraction from smartphone. SaferCross adopts a holistic approach by identifying and developing essential system components that are missing in existing systems and integrating the system components into a “fully-functioning”mobile system for pedestrian safety. Specifically, we create algorithms for improving the accuracy and energy efficiency of pedestrian positioning, effectiveness of phone activity detection, and real-time risk assessment. We demonstrate that SaferCross, through systematic integration of the developed algorithms, performs situation awareness effectively and provides a timely warning to the pedestrian based on the information obtained from smartphone sensors and Direct Wi-Fi-based peer-to-peer communication with approaching cars. Extensive experiments are conducted in a department parking lot for both component-level and integrated testing. The results demonstrate that the energy efficiency and positioning accuracy of SaferCross are improved by 52% and 72% on average compared with existing solutions with missing support for positioning accuracy and energy efficiency, and the phone-viewing event detection accuracy is over 90%. The integrated test results show that SaferCross alerts the pedestrian timely with an average error of 1.6sec in comparison with the ground truth data, which can be easily compensated by configuring the system to fire an alert message a couple of seconds early.
Highlights
The number of pedestrian accidents continues to keep climbing
We present SaferCross, a mobile system for pedestrian safety based on the embedded sensors and WiFi Direct of smartphone [19]
EXPERIMENTAL RESULTS We implemented SaferCross on a Samsung Galaxy S6 which is equipped with 1.5GHz octa-core processor and 3GB RAM running on Android 5.0
Summary
Many sources point out that smartphone distraction is one of the major causes for pedestrian fatalities [2]–[4] Many pedestrians use their mobile phones while walking on sidewalks and crossing the street [5], [6]. A recent study shows that more than a third of pedestrians use their mobile phones while crossing streets [7], and 16% of pedestrian. The significant rise in the pedestrian injuries started in 2009, and this is exactly when smartphones started to take hold [11] These distracted pedestrians are even called ‘‘smartphone zombies’’ in recent scientific publications to stress the seriousness of the problem [12]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
