DRIVER BEHAVIOR IN CAR-FOLLOWING : A DRIVING SIMULATOR STUDY

This paper describes the results of a study performed with the interactive fixed-base driving simulator of the Inter-University Research Center for Road Safety aimed: a) at analyzing the driver behavior in car-following situations in different traffic-flow conditions and b) at providing the first elements to choose the most appropriate threshold value of Time-To-Collision (TTC) in order to discriminate unsafe from safe car-following behaviors. A test alignment 8.5 km long and 4 different traffic scenarios were implemented in the simulator. Thirty-two subjects drove in the simulator. Several values of threshold were used to quantified advanced TTC-based indicators. The results highlighted that: 1) the car-following behavior is significantly affected by the volume-to-capacity ratio; 2) the most efficient threshold values of TTC seem to be 2.5 and 3s. These results should be considered for the development of Collision Avoidance Systems.

[1]  Francesco Bella.  Can Driving Simulators Contribute to Solving Critical Issues in Geometric Design? , 2009 .

[2]  Edward Chung,et al.  Sensitivity of road safety indicators in normal and crash cases , 2008 .

[3]  Daniel V. McGehee,et al.  Human Performance Models and Rear-End Collision Avoidance Algorithms , 2001, Hum. Factors.

[4]  John C Hayward,et al.  NEAR-MISS DETERMINATION THROUGH USE OF A SCALE OF DANGER , 1972 .

[5]  Raymond J Kiefer,et al.  Developing an inverse time-to-collision crash alert timing approach based on drivers' last-second braking and steering judgments. , 2005, Accident; analysis and prevention.

[6]  M M Minderhoud,et al.  Extended time-to-collision measures for road traffic safety assessment. , 2001, Accident; analysis and prevention.

[7]  Robert Graham,et al.  The Format and Presentation of Collision Warnings , 1997 .

[8]  Rob Gray,et al.  Perceptual Processes Used by Drivers During Overtaking in a Driving Simulator , 2005, Hum. Factors.

[9]  Jeroen Hogema,et al.  TIME-TO-COLLISION AND COLLISION AVOIDANCE SYSTEMS , 1994 .

[10]  Jeroen Hogema,et al.  EFFECTS OF INTELLIGENT CRUISE CONTROL ON DRIVING BEHAVIOUR: A SIMULATOR STUDY , 1996 .

[11]  Andreas Tapani,et al.  Evaluation of Safety Effects of Driver Assistance Systems Through Traffic Simulation , 2006 .

[12]  David H. Klyde,et al.  A Low Cost PC Based Driving Simulator for Prototyping and Hardware-In-The-Loop Applications , 1998 .

[13]  A. Horst.  A time-based analysis of road user behaviour in normal and critical encounters , 1990 .

[14]  Katja Vogel,et al.  A comparison of headway and time to collision as safety indicators. , 2003, Accident; analysis and prevention.

[15]  Seungwuk Moon,et al.  Design, tuning, and evaluation of a full-range adaptive cruise control system with collision avoidance , 2009 .