Laserfiche WebLink
California MUTCD 2014 Edition <br />(FHWA’s MUTCD 2009 Edition, including Revisions 1 & 2, as amended for use in California) <br />Chapter 6H – Typical Applications November 7, 2014 <br />Part 6 – Temporary Traffic Control <br />Page 1163 <br />Notes for Figure 6H-12 —Typical Application 12 <br />Lane Closure on a Two-Lane Road Using Traffic Control Signals <br /> <br />Standard: <br />1. Temporary traffic control signals shall be installed and operated in accordance with the provisions of <br />Part 4. Temporary traffic control signals shall meet the physical display and operational requirements <br />of conventional traffic control signals. <br />2. Temporary traffic control signal timing shall be established by authorized officials. Durations of red <br />clearance intervals shall be adequate to clear the one-lane section of conflicting vehicles. <br />3. When the temporary traffic control signal is changed to the flashing mode, either manually or <br />automatically, red signal indications shall be flashed to both approaches. <br />4. Stop lines shall be installed with temporary traffic control signals for intermediate and long-term <br />closures. Existing conflicting pavement markings and raised pavement marker reflectors between the <br />activity area and the stop line shall be removed. After the temporary traffic control signal is removed, <br />the stop lines and other temporary pavement markings shall be removed and the permanent <br />pavement markings restored. <br />5. Safeguards shall be incorporated to avoid the possibility of conflicting signal indications at each end of <br />the TTC zone. <br />Guidance: <br />6. Where no-passing lines are not already in place, they should be added. <br />7. Adjustments in the location of the advance warning signs should be made as needed to accommodate the <br />horizontal or vertical alignment of the roadway, recognizing that the distances shown for sign spacings are <br />minimums. Adjustments in the height of the signal heads should be made as needed to conform to the <br />vertical alignment. <br />Option: <br />8. Flashing warning lights shown on the ROAD WORK AHEAD and the ONE LANE ROAD AHEAD signs <br />may be used. <br />9. Removable pavement markings may be used. <br />Support: <br />10. Temporary traffic control signals are preferable to flaggers for long-term projects and other activities that <br />would require flagging at night. <br />11. The maximum length of activity area for one-way operation under temporary traffic control signal control is <br />determined by the capacity required to handle the peak demand. <br />