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'i <br /> Signals <br /> Description of the function: <br /> This function includes the routine and emergency maintenance of the citywide traffic <br /> signal system. School crossing signals and pedestrian crossing signals are included in <br /> this work but are not usually a major portion of the program. <br /> Comparison to others: <br /> { <br /> I <br /> -Salem ~ r~ ~ , <br /> ! _ ° Salem.: " R ' <br /> Ft. Collins- Ft. Collins <br /> Boulder } Boulder <br /> Sunnytiele Sunnyvale <br /> I Vancouver Vancouver <br /> ~ Eugene Eugene <br /> I <br /> i 0.00...0.10 0.20 A30 0.40 0.50 $0 $2,000 $4,000. $6.000 $8,000.. <br /> i <br /> Signals per mile Cost peCSignal <br /> i <br /> I <br /> Local land use patterns and traffic volumes determine the number of signals in any <br /> community. The cities surveyed were fairly close, however, in the number of signals per <br /> mile. Cost per signal maintained was not as close with Eugene having the second lowest <br /> cost per mile of the group. <br /> Cost Factor Analysis: <br /> The number of employees devoted to this function is consistent with other cities <br /> surveyed. The number of traffic signals per mile in the system is second highest of the <br /> cities surveyed. <br /> <br /> 'i There is some indication that not all signals installed meet traffic warrants and maybe <br /> adding unnecessary expense to the system. Signal timing optimization could be done <br /> using existing computer equipment but staff time has not been available due to other <br /> priorities. <br /> Conversion of incandescent signal lamps to LED indications has already been <br /> accomplished. Boulder's experience for conversion was savings of $450/month for <br /> reduced connect load. Similar savings should be experienced in Eugene although current <br /> lower power rates would make the amount lower for now. <br /> Contracting Options: <br /> None of the surveyed cities contract for signal maintenance though other cities have done <br /> it. <br /> When street excavations are planned, utilities locate their facilities to prevent dig-ups. <br /> Traffic signal detection loops must be located and marked as well. This activity takes <br /> 21 <br /> <br />