4Sign Inventory how important is it? A sign inventory is an important element of your sign inspection program.A sign inventory can be anything from a card file to an inventory software program.
5Pierce County Sign Inventory Home Grown Software Program – “Rubble”System Divided into Area’s and Sub AreasSign Work is Documented by Function CodeAbility To Track Work and SignsTrack work completed by functionTrack signs by age and locationDocument time for reports
6Serial Numbers tracking sign age Having the ability to search a group of signs and then break them down by age was key to putting our pilot program together and an important part of the sampling plan used by engineering to come up with our control samples. In this example we have used the first 2 numbers of the serial number for the year. Looking back I think that I would have used After the millennium we began using 2000, 2001… so now the first two numbers are 20. Throws the search off but still works OK.
8Street Name Signs embedded serial numbers Since we fabricate our street name signs and use ec film we have the ability to install a small serial number under the film and make it part of the sign. I’ve got a sample of this process that I’ll pass around if your not familiar with the process. This has worked well so far and hasn’t added any additional time to our fabrication cost. This is a small sticker made on a simple label maker once it is installed under the ec film it becomes a permanent part of the sign. It is easily identifiable to a sign technician but most people would never notice it. We’re really looking forward to the next few years of data to see where this program will take us.
9Sign Inspection Route Listed by Route and Position Number
11Pierce County regular sign inspection Quarterly Full Sign InspectionIncludes stop and yield inspectionMonthly Stop and Yield Inspection8 additional monthly inspectionsOur data shows that regular sign inspection reduces sign call outs
12Inspection Intervals your geographical area ? VandalismGun ShotGraffitiStolenNatural CausesVegetationDirtyEnvironment
31Sign Retroreflectivity MUTCD requirements Final Rule – published Dec 21, 2007Effective January 22, 20084 years to establish/implement assessment management method7 years to replace ground-mount signs10 years to replace overhead signsOn July 30, 2004, a Notice of Proposed Amendment to the MUTCD was published in the Federal Register. It is proposed as Revision 2, and is referred to as “Maintaining Traffic Sign Retroreflectivity.” The final rule was published December 21, 2007, and became effective as of January 22nd This ruling gives us 4 years to implement an assessment management method. Waiting to long to implement a system can reduce your time to correct problems found in your system.
32Sign Retroreflectivity – MUTCD “shall” statement (standard): “Public agencies or officials having jurisdiction shall use an assessment or management method that is designed to maintain traffic sign retroreflectivity at or above the minimum levels in Table 2A-3.”The new shall statement refers to using methods of assessment or management to maintain the sign retroreflectivity at or above the minimum levels. We were hoping that the table did not make it into the MUTCD, it seems that Attorneys love numbers.
33Sign Retroreflectivity – MUTCD guidance: “One or more of the following assessment or management methods should be used to maintain traffic sign retroreflectivity.”Our guidance is to use one or more of the assessment or management methods, to ensure that we are meeting the minimum levels in the new standard.
34Assessment/Management Methods a required element Visual Nighttime InspectionMeasured RetroreflectivityExpected LifeBlanket ReplacementControl SignsOther Supported MethodsThere are five methods listed.Visual nighttime inspectionsMeasured retroreflectivityExpected LifeBlanket replacementControl signsI’ll spend a few minutes briefly describing each of these methods. First up is using visual inspections at night.
35Which Method to Use? Control signs /Measured retroreflectivity, Works for Us
36Retroreflectivity data and calculations Serial ##SequenceResult / Date1March 6, 2007White Average310Red Average41Serial ##SequenceResult / Date1March 6, 2007W000001/1316000001/2300000001/3313R000001/441000001/5000001/640RATIO7.6White Average310Red AverageOur results are compressed but can be expanded to show the big picture. What stands out to me on the expanded view of readings is the consistency of the red readings, that’s where we’re looking for wear. We’ve also set up the fields to change color when readings are getting close to or below the minimum levels. With this type of report it doesn’t take long to see how your system is doing. We found very quickly that this was the right method for Pierce County, having a good inventory system in place really made this work and as always, support from above.
37Retroreflectivity Program tracking the results Type III Stop Sign – installed 1995
38Asset Management getting the most of your dollars Cost to Replace = $ 165,000.