5.6 Determining Intersection Sight Distance Drivers must have a clear view of an entire intersection so they can see traffic control devices and see far enough upstream or downstream along an intersecting road to identify acceptable gaps in cross traffic before...
5.4 Determining Stopping Sight Distance Stopping sight distance is the distance a motorist traveling at a particular speed needs to stop their vehicle once they detect an object on the road. To determine stopping sight distance, use actual operating speeds if they are...
5.2 Key Components of Sight Distance Formally, sight distance is the length of road a vehicle travels before the driver completes a maneuver in response to an element, hazard, or condition that requires a change in the vehicles speed and/or path. Sight distance...
6.12 Signs on Horizontal Curves Use curve warning signs to communicate downstream changes in horizontal alignment to motorists. Signs need to include a directional arrow that indicates if a curve bends to the left or right. Advisory speed signs can also be used. Table...
6.8 Countermeasures for Improving Steering and Vehicle Control Through Curves Motorists retain better control of vehicles when curves conform with their expectations and typical behaviors. Several design strategies promote safer alignments (Table 6.2). Table 6.2...
