کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5037251 | 1472435 | 2017 | 13 صفحه PDF | دانلود رایگان |
- GSCTs increased the probability of stopping at an intersection by 13.10%.
- GSCTs reduced deceleration rates by 1.50Â ft/s2.
- A GSCT probability of stopping model was developed with an 88.7% accuracy.
Traffic signal countdown timers (TSCTs) are innovative, practical, and cost effective technologies with the potential to improve safety at signalized intersections. The purpose of these devices is to assist motorists in decision-making at signalized intersections by providing them with real-time signal duration information. This study examines US driver responses in the presence of a green signal countdown timer (GSCT) and the implications those responses have on intersection safety. A driving simulator study was conducted to record driver responses to virtual GSCTs. Fifty-five participants (32 male and 23 female) responded to 1100 simulated traffic signals, half of which had GSCTs. A predictive model was developed and validated to estimate the change in driver's probability to stop at different distances from the stop line in the presence of a GSCT. The presence of a GSCT increased average driver stopping probability in the dilemma zone by 13.10%, while decreasing average driver deceleration rates by 1.50Â ft/s2. These results suggest that GSCTs may contribute to improved intersection safety in the US.
Green Signal Countdown Timers reduced average deceleration by 1.50Â ft/s2, while increasing driver probability to stop by 13.10%.117
Journal: Transportation Research Part F: Traffic Psychology and Behaviour - Volume 51, November 2017, Pages 1-13