AgeLab’s Chaiwoo Lee, Nan Zhao and Rachel Fraunhoffer presented at the New England Chapter of the Human Factors and Ergonomics Society 2011 Student Conference. Abstracts for the related papers are included below.
The Relationship between Self-Reported Behavior on the Driving Behavior Questionnaire and Observed Velocity and Lane Changing Behavior on the Highway
Rachel Fraunhoffer1, Nan Zhao1,2, Bryan Reimer1, Bruce Mehler1, and Joseph F. Coughlin1
1AgeLab and New England University Transportation Center
2 Nan China affiliations
The Driver Behavior Questionnaire (DBQ) is a well-documented instrument for obtaining self-report information on aberrant driving behaviors. The DBQ contains three subscales to capture different aspects of driver behavior: errors, lapses and violations. Previous research has demonstrated a relationship between DBQ scores and crash involvement. There is little or no published information, however, on the relationship between DBQ scores and driving behaviors that may bear some relationship to crash risk under actual driving conditions. The present study focuses on the relationship between DBQ subscales and observed highway driving behaviors. A sample of 100 drivers with a safe recent driving history across two age groups (20-29, 60-69) participated in a field driving study. Prior to driving, participants completed a 24-item U.S. version of the DBQ. The relationships between subscales of the DBQ and driving behavior were examined. The results indicated that drivers with high violations scores drove faster, and changed lanes more frequently. No differences in driving speed or lane changes were associated with high versus low errors and lapses. In addition female drivers changed lanes less frequently than males and older drivers drove slower.
Actual and Self-reported Highway Driving Behavior and the Relationship to reported Frequency of Cell Phone Use
Nan Zhao1,2, Ying Wang2, Bryan Reimer2, Bruce Mehler2, and Joseph F. Coughlin2
1 State Key Laboratory of Brain and Cognitive Science, Institute of Psychology, Chinese Academy of Sciences
2MIT AgeLab and New England University Transportation Center
The higher crash risk reported in the literature for individuals who use cell phones while driving may be due both to the direct interference of cell phone use with the driving task and risky driving behaviors independent of cell phone use. Actual highway driving performance, self-reported aberrant driving behaviors drawn from the Manchester Driver Behavior Questionnaire (DBQ), and attitudes toward speeding, passing behaviors and relative concern about being involved in a crash were assessed. Results show that individuals who reported frequently using cell phones while driving were found to drive faster, change lanes more frequently, spend more time in the left lane, and engage in more instances of hard braking and high acceleration events. Cell phone users also scored higher in self-reported driving violations on the DBQ and reported more positive attitudes toward speeding and passing than drivers who did not report using a cell phone regularly while driving. These findings indicate that a higher reported frequency of cell phone use while driving is associated with a broader pattern of behaviors that are likely to increase the overall risk of crash involvement.