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California MUTCD Page 6G-13 <br /> (FHWA's MUTCD 2003 Revision 1,as amended for use in California) <br /> law enforcement officer or flagger shall be provided at the crossing to prevent vehicles from stopping <br /> on the tracks,even if automatic warning devices are in place. <br /> Support: <br /> Figure 6H-46 shows work in the vicinity of a highway-rail grade crossing. <br /> Guidance: <br /> Early coordination with the railroad company should occur before work starts. <br /> Section 6G.20 Temporary Traffic Control Durine Niehttime Hours <br /> Standard: <br /> Highway construction work lighting shall be as per Construction Safety Order 1523(California Code of <br /> Regulations Title 8, Division 1, Chapter 4, Subchapter 4,Article 3, Section 1523-Illumination). See See Section <br /> 1A.11 for information regarding this publication. <br /> Support: <br /> Chapter 6D and Sections 617.68 and 6G.05 contain additional information regarding the steps to follow <br /> when pedestrian or bicycle facilities are affected by the worksite. <br /> Conducting highway construction and maintenance activities during night hours could provide an <br /> advantage when traditional daytime traffic control strategies cannot achieve an acceptable balance between <br /> worker and public safety,traffic and community impact,and constructability.The two basic advantages of <br /> working at night are reduced traffic congestion and less involvement with business activities. However,the <br /> two basic conditions that must normally be met for night work to offer any advantage are reduced traffic <br /> volumes and easy set up and removal of the traffic control patterns on a nightly basis. <br /> Shifting work activities to night hours,when traffic volumes are lower and normal business is less active, <br /> might offer an advantage in some cases,as long as the necessary work can be completed and the work site <br /> restored to essentially normal operating conditions to carry the higher traffic volume during non-construction <br /> hours. <br /> Although working at night might offer advantages, it also includes safety issues. Reduced visibility <br /> inherent in night work impacts the performance of both drivers and workers. Because traffic volumes are <br /> lower and congestion is minimized,speeds are often higher at night necessitating greater visibility at a time <br /> when visibility is reduced.Finally,the incidence of impaired(alcohol or drugs), fatigued,or drowsy drivers <br /> might be higher at night. <br /> Working at night also involves other factors, including construction productivity and quality, social <br /> impacts, economics,and environmental issues.A decision to perform construction or maintenance activities <br /> at night normally involves some consideration of the advantages to be gained compared to the safety and <br /> other issues that might be impacted. <br /> Guidance: <br /> Considering the safety issues inherent to night work, consideration should be given to enhancing traffic <br /> controls(see Section 6G.04)to provide added visibility and driver guidance,and increased protection for <br /> workers. <br /> In addition to the enhancements listed in Section 6G.04, consideration should be given to providing <br /> additional lights and retroreflective markings to workers, work vehicles,and equipment. <br /> Option: <br /> Where reduced traffic volumes at night make it feasible,the entire roadway may be closed by detouring <br /> traffic to alternate facilities, thus removing the traffic risk from the activity area. <br /> Guidance: <br /> Because typical street and highway lighting is rarely adequate to provide sufficient levels of illumination <br /> for work tasks,temporary lighting should be provided where workers are active to supply sufficient <br /> illumination to reasonably safely perform the work tasks. <br /> Temporary lighting for night work should be designed such that glare does not interfere with driver <br /> visibility,or create visibility problems for truck drivers,equipment operators, flaggers,or other workers. <br /> Consideration should also be given to stationing uniformed law enforcement officers and lighted patrol <br /> cars at night work locations where there is a concern that high speeds or impaired drivers might result in <br /> undue risks for workers or other drivers. <br /> Chapter 6G—Type of Temporary Traffic Control Zone Activities September 26,2006 <br /> Part 6—Temporary Traffic Control <br />