29.4 Markings for Bicycles at Intersections When designing intersections, it is important to attend to potential conflicts between all users — not just motorists. The growing number of large vehicles on roads can imperil bicyclists. Larger vehicles, infotainment...
29.2 Signals and Signal Timing for Bicycles at Intersections Historically, road designs and traffic signal timings have not focused on accommodating bicyclists. With bicyclist numbers increasing, it is critical to ensure bicyclists have enough time to cross...
10.2 Acceptable Gap Distance Motorists turning from a minor road onto a major road will not make a turn until they observe an adequate gap in traffic on the major road. Acceptable gap distance is the size of gap that provides motorists enough time to stop and complete...
10.6 Left-Turn Lanes at Non-Signalized Intersections Dedicated left-turn lanes at non-signalized intersections improve traffic flow and safety by removing left-turning vehicles from the through lane and providing space where they can decelerate await an acceptable gap...
10.8 Sight Distance at Left-Skewed Intersections When a vehicle crosses a major road from a left-skewed minor road, the motorist’s line of sight is obstructed by portions of their vehicle (e.g., roof posts, door frames). AASHTO recommends that intersection skew not...
30.12 Roundabout Lighting Lighting is an essential navigational aid and should be used at every roundabout so motorists can safely drive them at night and other periods of low visibility. Partial lighting is better than no lighting. In areas where installing a power...
