12.2 Task Analysis of Driver Merging Behavior at Freeway Entrance Ramps Merging onto a freeway is a dynamic, challenging task fraught with crash risk. Motorists on the mainline and those who are attempting to merge onto the mainline identify gaps and modify their...
11.8 Countermeasures for Improving Accessibility for Vision-Impaired Pedestrians at Signalized Intersections Several design strategies can be used to improve accessibility for vision-impaired pedestrians at signalized intersections: Avoid the use of large-radius...
11.4 Restricting Right Turns on Red to Address Pedestrian Safety The Manual on Uniform Traffic Control Devices lists three pedestrian-related situations in which right turns on red (RTOR) should be restricted, including where: An exclusive pedestrian phase exists...
11.2 Engineering Countermeasures to Reduce Red Light Running Factors that influence the likelihood of drivers running red lights include traffic volume, cycle length, advance detections for green extension, speed, signal coordination, yellow interval duration,...
10.10 Sight Distance at Right-Skewed Intersections When a vehicle crosses a major road from a right-skewed minor road, the motorist has an unobstructed line of sight over their left shoulder. But some drivers may not be able to turn their bodies to take advantage of...
10.4 Factors Affecting Acceptable Gap Distances Many factors influence acceptable gap distance. When making assumptions about acceptable gap distance, it is important for designers to keep in mind issues summarized in Table 10.2 Table 10.2 Factors that Influence...
