Idaho Administrative Code
Title IDAPA 39 - Transportation, Department of
Rule 39.03.42 - RULES GOVERNING HIGHWAY RIGHT-OF-WAY ENCROACHMENTS ON STATE RIGHTS-OF-WAY
Section 39.03.42.401 - MEDIANS

a. Where a traffic engineering study indicates that medians would be beneficial to control access, maintain street capacity, and improve traffic safety. (3-31-22)

b. When medians are selected, non-traversable medians are the preferred median type; however, traversable medians in urban areas may be considered to accommodate emergency vehicles. (3-31-22)

c. Pedestrian/bicycle safety shall be given consideration in the choice and design of medians in areas that are frequently used by pedestrians/bicycles. (3-31-22)

d. construction requirements for all new or modified public approaches to the state highway right-of-way, including private approaches to subdivisions and businesses, shall be reviewed for the need to place medians on the state highway. (3-31-22)

e. Channelization formed by raised curbs, solid painted islands, left turn lanes, or other traffic control installations may be required to create a mandatory right-in/right-out and/or left-in/left-out approach condition. (3-31-22)

a. Placed on multi-lane state highways at all signalized intersections, at locations which currently meet the criteria for a signal warrant and fulfill traffic signal coordination requirements, at locations that are anticipated to meet future traffic signal considerations, and at locations where there will be no significant reduction in safety or operational efficiency. (3-31-22)

b. Designed with a left turn lane and sufficient storage for left turning traffic. (3-31-22)

c. Median openings allowing U-turns shall be provided only at locations having sufficient roadway width. (3-31-22)