Channelizing Device Details
- Cones may be used as channelizing devices in short term operations where work is active.
- Direction Indicator Barricades may be used for all tapers approaching a work zone. Utilization is recommended on tapers approaching work zones on freeways and expressways.
- Use drums as channelizing devices when these devices are expected to remain in the same location for more than 24 hours.
- Cones used at nighttime and/or on highways with speed limits greater than 40 MPH shall have a minimum height of 28". Retroreflective white bands are required as shown on the adjacent diagram.
- Tubular markers should be used only where space restrictions do not allow for placement of other more visible devices. 18" tubular markers may only be used on conventional highways with a speed limit of 40 MPH or less. Retroreflective bands are required and shown as white on the adjacent diagram.
- Rail stripe widths shall be 4" wide on Type 1 and Type 2 Barricades and Direction Indicator Barricades; Rail stripe widths shall be 6" wide on Type 3 Barricades.
- Warning lights are shown for purpose of displaying proper mounting positions. Lights are optional on these devices, however consistency in application should be observed. For example, if lights will be used in a taper, then all channelizing devices in the taper should be mounted with lights.
- Refer to the MUTCD, Section 6F.62 through 6F.74, for more information
TYPE III BARRICADES
DIRECTION INDICATOR BARRICADES