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California MUTCD Page 6G-8 <br /> (FHWA's MUTCD 2003 Revision 1,as amended for use in California) <br /> In urban TTC zones,decisions are needed on how to control vehicular traffic,such as how many lanes <br /> are required,whether any turns need to be prohibited at intersections, and how to maintain access to <br /> business, industrial, and residential areas. <br /> Pedestrian traffic needs separate attention. Chapter 6D contains information regarding pedestrian <br /> movements near TTC zones. <br /> Standard: <br /> If the TTC zone affects the movement of pedestrians,adequate pedestrian access and walkways <br /> shall be provided.If the TTC zone affects an accessible and detectable pedestrian facility,the <br /> accessibility and detectability shall be maintained along the alternate pedestrian route. <br /> If the TTC zone affects the movement of bicyclists,adequate access to the roadway or shared-use <br /> paths shall be provided(see Part 9). <br /> Where transit stops are affected or relocated because of work activity,access to temporary transit <br /> stops shall be provided. <br /> Guidance: <br /> If a designated bicycle route is closed because of the work being done,a signed alternate route should be <br /> provided. Bicyclists should not be directed onto the path used by pedestrians. <br /> Work sites within the intersection should be protected against inadvertent pedestrian incursion by <br /> providing detectable channelizing devices. <br /> Support: <br /> Utility work takes place both within and outside the roadway to construct and maintain services such as <br /> power,gas, light, water,or telecommunications. Operations often involve intersections,since that is where <br /> many of the network junctions occur. The work force is usually small,only a few vehicles are involved, and <br /> the number and types of TTC devices placed in the TTC zone is usually minimal. <br /> Standard: <br /> All TTC devices shall be retroreflective or illuminated if utility work is performed during <br /> nighttime hours. <br /> Guidance: <br /> As discussed under short-duration projects, however,the reduced number of devices in utility work <br /> zones should be offset by the use of high-visibility devices, such as high-intensity rotating,flashing, <br /> oscillating, or strobe lights on work vehicles or high-level warning devices. <br /> Support: <br /> Figures 6H-6, 614 10 6H-10(CA), 6H-15,6H-18,6H-21,6H-22,6H-23, 6H-26,and 6H-33 are examples of I <br /> typical applications for utility operations. Other typical applications might apply as well. <br /> Section 6G.12 Work Within the Traveled Way of Multi-lane,Nonaccess Controlled Highways <br /> Support: <br /> Chapter 6D and Sections 6F.68 and 6G.05 contain additional information regarding the steps to follow <br /> when pedestrian or bicycle facilities are affected by the worksite. <br /> Work on multi-lane(two or more lanes of moving motor vehicle traffic in one direction)highways is <br /> divided into right-lane closures,left-lane closures, interior-lane closures, multiple-lane closures,and closures <br /> on five-lane roadways. <br /> Standard: <br /> When a lane is closed on a multi-lane road for other than a mobile operation,a transition area <br /> containing a merging taper shall be used. <br /> Guidance: <br /> When justified by an engineering study,temporary traffic barriers should be used to prevent incursions <br /> of errant vehicles into hazardous areas or work space. <br /> Standard: <br /> When temporary traffic barriers are placed immediately adjacent to the traveled way,they shall <br /> be equipped with appropriate channelizing devices,delineation,and/or other TTC devices. For lane <br /> closures,the merging taper shall use channelizing devices and the temporary traffic barrier shall be <br /> placed beyond the transition area. <br /> Chapter 6G—Type of Temporary Traffic Control Zone Activities September 26,2006 <br /> Part 6—Temporary Traffic Control <br />