- Is the distance between opposing directions from the edge of traveled way of each direction, including shoulders.
- Consider the potential need for median traffic barrier, but where practical, the median should be designed to not need traffic barrier.
- The wider the median, the larger the footprint impacts the surrounding topography.
- In urban areas with constrained right of way, larger median widths will likely be impractical.
- Urban closed section medians at signalized intersections with crosswalks should be at least 6 feet wide for pedestrian refuge.
- Rural open section medians should be at least 30 feet with ADT less than 40,000, 50 feet with 40,000<ADT<80,000, 75 feet ADT greater than 80,000. If these median widths are not attainable, traffic barriers will be warranted.
- Traffic barriers will be warranted if sufficient median widths are not provided. However, barrier placement should be minimized where practical.
- Should be provided on high type facilities, arterial or higher, with four or more lanes.
- Intended to provide opposing traffic separation, errant vehicle recovery area, stalled vehicle stopping area, potential storm-water management area, future widening allowance, left turn bay storage and speed change space, speed change lanes, and green spaces and pedestrian refuges for crosswalks in urban areas.
- Can be depressed, raised, or flush with the traveled way surface.