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California MUTCD 2014 Edition Page 1144 <br /> (FHWA's MUTCD 2009 Edition,including Revisions 1 &2,as amended for use in California) <br /> Notes for Figure 6114 —Typical Application 4 <br /> Short Duration or Mobile Operation on a Shoulder <br /> Guidance: <br /> 1.In those situations where multiple work locations within a limited distance make itpractical to place <br /> stationary signs, the distance between the advance warning sign and the work should not exceed 5 miles. <br /> 2.In those situations where the distance between the advance signs and the work is 2 miles to 5 miles, a <br /> Supplemental Distance plaque should be used with the ROAD WORKAHEAD sign or SHOULDER WORK <br /> AHEAD(C24(CA))sign. <br /> Option: <br /> 3. The ROAD WORK NEXT XX MILES sign may be used instead of the ROAD WORK AHEAD sign or <br /> SHOULDER WORK AHEAD (C24(CA))sign if the work locations occur over a distance of more than 2 miles. <br /> 4. Stationary warning signs may be omitted for short duration or mobile operations if the work vehicle displays <br /> high-intensity rotating, flashing,oscillating,or strobe lights. <br /> 5. Vehicle hazard warning signals may be used to supplement high-intensity rotating,flashing,oscillating,or <br /> strobe lights. <br /> Standard: <br /> 6.Vehicle hazard warning signals shall not be used instead of the vehicle's high-intensity rotating, <br /> flashing,oscillating,or strobe lights. <br /> 7.If an arrow board is used for an operation on the shoulder,the caution mode shall be used. <br /> 8.Vehicle-mounted signs shall be mounted in a manner such that they are not obscured by equipment or <br /> supplies. Sign legends on vehicle-mounted signs shall be covered or turned from view when work is <br /> not in progress. <br /> Chapter 6H—Typical Applications November 7,2014 <br /> Part 6—Temporary Traffic Control <br />