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Work Zone Traffic Controls: Crashworthy Work Zone Traffic Control Devices - Information on FHWA policy on crashworthy hardware, the different categories of work zone devices, FHWA Acceptance Letters on devices that have been deemed crashworthy, and Frequently Asked Questions about work zone devices.
The buffer space should be extended so that the two-way traffic taper is placed before a horizontal (or crest vertical) curve to provide adequate sight distance for the flagger and a queue of stopped vehicles.
In many instances, an appropriate TTC plan is achieved by combining features from various typical applications. For example, work at an intersection might present a near-side work zone for one street and a far-side work zone for the other street.
Lane Closure on Two-Lane Road Using Flaggers (TA-10) This figure illustrates lane closure on a two-lane road using flaggers. A legend under the figure states that this is Typical Application 10.
Effective March 10, 2023, CA MUTCD 2014 Revision 7 (Rev 7), includes edits to provide uniform standards and specifications for all official traffic control devices in California pursuant to the provisions of California Vehicle Code Section 21400 and the recommendations of the CTCDC.
Option: This TTC zone application may be used as an alternate to the TTC application shown in Figure 6H-10 6H-10(CA) (using flaggers) when the following conditions exist: Vehicular traffic volume is such that sufficient gaps exist for vehicular traffic that must yield.
Traffic control devices shall be defined as all signs, signals, markings, and other devices used to regulate, warn, or guide traffic, placed on, over, or adjacent to a street, highway, pedestrian facility, bikeway, or private road open to public travel (see definition in Section 1A.13) by authority of a public agency or official having jurisdict...
