Rector, Kyle; Joseph Kearney; Jodie Plumert; Jeehan Malik; Morgan Di Napoli Parr; and Jessica Flathau
Created Date
Hyperlink Exit Door
Lesson Background HTML

Research has shown that older pedestrians have more difficulty making road-crossing decisions than younger adults, which presents an opportunity for vehicle-to-pedestrian (V2P) communication to assist older adults’ street-crossing decisions. This study developed an application (app) for smartphones generating visual, haptic, and auditory  permissive alerts (safe to cross) and prohibitive warnings (not safe to cross) in a virtual street-crossing environment. A between-subjects study (i.e., different people test each condition) was completed with 66 participants ages 65-84 to understand the effects of these alerts and warnings. Each user’s brisk walking speed was considered to determine whether it was safe to cross the street in a stream of traffic. Participants’ behavior under three different conditions were studied: i) permissive where the participants held a mobile phone and received alerts telling them when it was safe to cross, ii) prohibitive where the participants held a mobile phone and received warnings telling them that it was not safe to cross, iii) control where the participants held a mobile phone throughout the road-crossing session but did not receive any alerts.

Publication Sort Date
Prepared by the University of Iowa for SaferSIM
Result Type
Determining the Effect of Smartphone Alerts and Warnings on Older-Adult Street-Crossing
Project Category
External URL Disclaimer

(Our website has many links to other organizations. While we offer these electronic linkages for your convenience in accessing transportation-related information, please be aware that when you exit our website, the privacy and accessibility policies stated on our website may not be the same as that on other websites.)