12.12 Driver Behavioral Trends Based on Exit Ramp Geometry Exit ramps need to afford vehicles enough space to depart the main freeway lanes and enough distance to decelerate to a speed appropriate for the controlling feature of the ramp. Several design practices...
12.6 Driver Expectations at Freeway Lane Drops and Lane Reductions Because lane drops can confuse motorist, increase variability in speed, and result in erratic driving behaviors, designs need to match motorist expectations. Table 12.2 lists design practices that...
12.4 Reducing Wrong-Way Entries onto Freeway Exit Ramps Wrong-way incidents originate most often at exit ramps. They are also common in areas with low traffic volumes and light land use. Elderly motorists are more likely to be involved in wrong-way crashes than...
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...
