Work Zone Mobility and Safety Program
Photo collage: temporary lane closure, road marking installation, cone with mounted warning light, and drum separated work zones.
Office of Operations 21st Century Operations Using 21st Century Technologies

Best Practice

BEST PRACTICE:

G4−14: Use of 42" Flexible Cones (a.k.a. "Grabber Cones")

DESCRIPTION:

The Ohio Department of Transportation (ODOT) evaluated the use of weighted channelizers (flexible/"grabber" cones) beginning in 1997 and approved them for use in July 2001. These cones are generally used in the "activity" area of the work zone. The weighted channelizers can be spaced more closely together and present the driver with more of a visual barrier than when drums are used. Per ODOT policy, the maximum spacing between cones is 40 feet. The weighted channelizer should not be used in the transition/taper area during night operations on highways. On low speed facilities the weighted channelizer can be used day or night, on any section of the work zone.

REASON(S) FOR ADOPTING:

ODOT desired a device to use for short−term night time setups that could be installed/torn down quickly, and could reduce the chance of driver confusion.

PRIMARY BENEFIT(S):

Weighted channelizers provide easier installation/teardown, which results in less exposure for the work crew during these periods. These devices are easier to transport and take up less storage space than drums. The cones also reduce the chance of driver confusion.

MOST APPLICABLE LOCATION(S)/PROJECT(S):

Temporary work zone activities on low and high speed facilities.

STATE(S) WHERE USED:

Ohio

SOURCE/CONTACT(S):

Reynaldo Stargell, Ohio DOT
Phone: (614) 644−8177
E−mail: reynaldo.stargell@dot.state.oh.us

Office of Operations