01520356

Component

https://doi.org/10.3141/2434-01

http://scholar.google.com...erez&publication_year=2014

Experimental studies have found that driving degrades when the driver is conversing on a cell phone. Naturalistic driving studies (NDSs), however, have not found conversing on a cell phone to be associated with increased risk of a safety-critical event (SCE). NDSs have found commercial motor vehicle (CMV) drivers to be at decreased SCE risk when conversing on a hands-free cell phone. This study used naturalistic driving data sets to investigate whether driver adaptation took place when drivers of light vehicles and CMVs were conversing on a cell phone. Baseline epochs 30 s prior to cell phone calls were sampled. Drivers’ travel speeds, headways, inclinations to travel in the slowest lane, inclinations to change lanes, and lane-keeping performances were compared. There was no indication that drivers increased their longitudinal safety margins when conversing on a cell phone. Their headways to a lead vehicle did not differ despite CMV drivers significantly increasing their speeds by 4 km/h (2.5 mph) when conversing on a cell phone. However, CMV drivers changed lanes significantly less and light-vehicle drivers unintentionally departed their lanes significantly less when conversing on a handheld cell phone. Overall, the observed performance changes were not substantial. Given that drivers look forward more often when conversing on a cell phone, it is likely that the increased visual attention to the forward roadway may ultimately be why conversing on a cell phone has not been found to increase SCE risk.

01545262

14-1108

English

0000-0003-0437-5603

pp 1–8

2014

Transportation Research Record: Journal of the Transportation Research Board

9780309295222

Print

Figures (2) ; Photos; References (34) ; Tables (7)

Automatic data collection systems; Average travel speed; Behavior; Cellular telephones; Commercial drivers; Distraction; Drivers; Driving; Headways; Highway safety; Lane changing; Lane occupancy

Highways; Safety and Human Factors; I83: Accidents and the Human Factor

TRIS, TRB, ATRI

Jan 27 2014 2:26PM

• Automatic Generation and Population of a Graphics-Based Driving Simulator: Use of Mobile Mapping Data for Behavioral Testing of Drivers
• Bicycles in Urban Areas: Review of Existing Methods for Modeling Behavior
• Cell Phone Resting Locations: Use of the 100-Car Naturalistic Driving Study to Determine the Most Frequent In-Vehicle Cell Phone Placement and Containers
• Combining Driving Performance Information in an Index Score: A Simulated Curve-Taking Experiment
• Effect of Different Distractions on Driving Performance for Drivers Using a Touch Screen
• Evaluation of Truncated Arrow per Lane Guide Signs
• Examination of Limitations Associated with Observing Driver Distraction
• Factors Affecting Drivers’ Cell Phone Use Behavior: Implications from a Naturalistic Study
• Integrating Behavioral Models in Network Operations: Evaluating Traveler Information and Demand Management for Weather-Related Events
• Microscopic Simulation Model for Pedestrian Flow at Signalized Crosswalks
• Novel Vehicle Motion Model Considering Driver Behavior for Trajectory Prediction and Driving Risk Detection
• Prediction of Drivers’ Speed Behavior on Rural Motorways Based on an Instrumented Vehicle Study
• Susceptibility to Driver Distraction Questionnaire: Development and Relation to Relevant Self-Reported Measures
• Traffic-Calming Measures Affecting Perceived Speed in Approaching Bends: On-Field Validated Virtual Environment
• Use of Drivers’ Jerk Profiles in Computer Vision–Based Traffic Safety Evaluations
• Use of Naturalistic Driving Data to Characterize Driver Behavior in Freeway Shockwaves