Gap acceptance and rejection are important parameters in determining the capacity of stop sign intersections. Gaps are either accepted or rejected depending on a number of factors including head ways, volume of traffic, drivers' characteristics etc. From the results obtained, it was observed that the critical gaps varied very slightly from weekdays to weekends, 3.8 sees for weekdays and 4 1 see...

When the right-turn vehicles share the same phase with pedestrians on divided lanes at intersection, the stopped buses or mediumsize vehicles that closed to the right-turn vehicleswould block the viewof drivers and pedestrians from the far-side of crosswalk.This paper aims at analyzing the changes of lag/gap acceptance behavior with/without considering sight obstruction and the headway of follo...

and follow-up headway values based on a comprehensive evaluation of roundabouts throughout the United States. The recommended operational models by NCHRP 3-65 will be incorporated into the next update of the Highway Capacity Manual (HCM). Although this NCHRP study contains a significant amount of data (including more than 500 h of video at various roundabout locations), the data do not include ...

New technology brings great benefits, but it can also create new and significant risks. When evaluating those risks in policymaking, there is a tendency to focus on social acceptance. By solely focusing on social acceptance, we could, however, overlook important ethical aspects of technological risk, particularly when we evaluate technologies with transnational and intergenerational risks. I ar...

Technology acceptance is a widely acknowledged key player in explaining technology adoption. However, there is a notable knowledge gap concerning the impact of cultural factors on technology acceptance, especially in the medical sector. It is evident though that countries differ greatly regarding their technical proneness, development and usage habits what should have considerable impact on acc...