16.8 Design Consistency in Rural Driving Motorists make fewer errors when they encounter geometric features that are consistent with their expectations. Inconsistent designs or facility operations violate driver expectations. Expectations for downstream road segments...
16.4 Countermeasures for Pavement/Shoulder Drop-Offs Shoulder drop-offs are present where the pavement surface and roadside surface differ in height (from a fraction of an inch to several inches). Height differences typically result from rutting erosion, excessive...
16.2 Passing Lanes The addition of passing lanes on two-lane roads can improve traffic operations and minimize motorist frustration by giving faster-moving vehicles a designated lane in which to bypass slower traffic. Table 16.1 lists design parameters for passing...
15.6 Methods to Reduce Driver Speeds in School Zones Traffic control devices and pavement markings are valuable for encouraging motorists to drive at lower speeds in school zones. Table 15.2 provides operational and design guidelines for school zones. Table 15.2...
15.4 Methods to Increase Compliance at Uncontrolled Crosswalks Design treatments that improve pedestrian safety and increase compliance with crossing requirements include: Installing a HWAK signal beacon or a half signal Providing a maximum pedestrian delay of 30 – 60...
14.12 Human Factors Considerations in Traffic Control Device Selection at Rail-Highway Grade Crossings Table 14.2 lists human factors to consider when deciding whether to install a Yield sign, Stop sign, or active control device. A Yield or Stop sign should always...
