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Page 6H-40 2003 Edition <br /> Notes for Figure 611-18—Typical Application 18 <br /> Lane Closure on Minor Street <br /> Standard: <br /> 1. This TTC shall be used only for low-speed facilities having low traffic volumes. <br /> Option: <br /> 2. Where the work space is short, where road users can see the roadway beyond, and where volume is low, <br /> vehicular traffic may be self-regulating. <br /> Standard: <br /> 3. Where vehicular traffic cannot effectively self-regulate,one or two flaggers shall be used as <br /> illustrated in Figure 6H-10. <br /> Option: <br /> 4. Flashing warning lights and/or flags may be used to call attention to the advance warning signs. <br /> 5. A truck-mounted attenuator may be used on the work vehicle and the shadow vehicle. <br />