620.8 Channelizing Devices used for Emphasis of Pavement Marking Patterns (MUTCD Chapter 3I)

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620.8.1 Channelizing Devices (MUTCD Section 3I.01)

Option. Channelizing devices (see EPG 616.11.1 through 616.11.7) such as tubular markers, vertical panels, lane separators, drums, and barricades may be used for general traffic control purposes such as channelizing lines, islands, pedestrian facilities, or bicycle facilities. Channelizing devices may also be used along a center line to preclude turns or along lane lines to preclude lane changing, as determined by engineering judgment.

Support. Although they are not considered to be traffic control devices, raised islands (see EPG 620.9) are also sometimes used to channelize traffic.

Standard. Except for color, the design of channelizing devices, including, but not limited to, retroreflectivity, minimum dimensions, and mounting height, shall comply with the provisions of EPG 616.11.

Except as provided in the following Option paragraph, the color of channelizing devices used outside of temporary traffic control zones shall be the same color as the pavement marking that they supplement, or for which they are substituted, in accordance with EPG 620.1.3.

Option. The color of channelizing devices used to emphasize pavement marking patterns outside of temporary traffic control zones may be orange provided that the application of the orange-colored channelizing device is not permanent.

Support. Emergency incidents and planned special events are the most common temporary traffic control zones that would justify orange channelizing devices to emphasize standard pavement marking colors. These events do not necessitate police officers or other authorized personnel to obtain and deploy channelizing devices that match the color of the existing pavement marking.

Standard. For nighttime use, channelizing devices shall be retroreflective (as described in Part 6). On channelizing devices used outside of temporary traffic control zones, retroreflective sheeting or bands shall be white if the devices separate traffic flows in the same direction and shall be yellow if the devices separate traffic flows in the opposite direction or are placed along the left-hand edge line of a one-way roadway or ramp.

620.8.2 Tubular Markers (MUTCD Section 3I.02)

Standard. Tubular markers for permanent installations shall be a minimum of 36 inches in height and shall be a minimum of 2 inches wide facing road users.

Guidance. Tubular markers should be affixed to the pavement or other surface either directly or by means of an attachment system that is affixed to the pavement or other surface. Tubular markers should normally be spaced no greater than the length of one line segment plus one gap of the broken (intermittent) lines used on the highway.

Option. Other spacing may be used based on engineering judgment.

Guidance. When tubular markers are used to supplement a R1-6 series sign (see EPG 903.2.19), they should not be used on the same pavement marking line where the R1-6 series sign is installed, because the tubular markers could obscure sign visibility.

Support. EPG 616.11.4 contains information for temporary installations of tubular markers.

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