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(b) The unit shall be self- contained with its own power <br /> supply, controls , raising and lowering device and shall be capable of being operated by one <br /> person . <br /> (c) The unit shall be secured in the vehicle for normal <br /> operation . <br /> SUBARTICLE 990 -4 . 1 (Page 962 ) is deleted and the following substituted : <br /> 990-4 . 1 Composition : Removable Tape shall be one of the products listed on the QPL . <br /> The pavement stripes and markings shall consist of high quality plastic materials , pigments , and <br /> glass spheres or other retroreflective materials uniformly distributed throughout their cross - <br /> sectional area, with a reflective layer of spheres or other retroreflective material embedded in the <br /> top surface . No foil type materials shall be allowed . <br /> ARTICLE 990 -4 . 10 (Page 963 ) is deleted and is replaced by the following : <br /> 9904 . 10 Color : Meet the requirements of 971 - 1 . 6 . <br /> ARTICLE 990 -4 (Pages 962 and 963 ) is expanded by the following : <br /> Of <br /> 9904 . 11 Removability : Ensure that the manufacturer shows documented reports <br /> that the removable tape is capable of being removed intact or in substantially large strips after <br /> being in place for a minimum of 90 days and under an average daily traffic count per lane of atilk <br /> least 5 , 000 vehicles per day. <br /> ARTICLE 990 - 5 (of the Supplemental Specifications) is deleted and the following <br /> substituted : <br /> 990 -5 Temporary Retroreflective Pavement Markers . <br /> Temporary Retroreflective Pavement Markers (RPM ' S ) shall meet the requirement of <br /> 970 - 1 . 2 . 1 , be one of the products listed on the QPL and be certified as meeting the following : <br /> (a) Composition : Use markers made of plastic , ceramic or other durable materials . <br /> Markers with studs or mechanical attachments will not be allowed . <br /> (b) Dimensions : Marker minimum and maximum surface dimensions is based on <br /> an x and y axis where the y dimension is the axis parallel to the centerline and the x axis is <br /> 90 degrees to y. Class E markers shall be 4 inch (W) by 2 inch (H) by 1 inch (D) . <br /> The x and y dimension of Class D markers shall be a maximum of 5 inches . The x <br /> dimension shall be a minimum of 4 inches and the minimum y dimension will be 2 . 25 inches . <br /> The maximum installed height of Class D markers shall be 1 inch . The maximum <br /> installed height of Class E markers shall be 2 inches . Use Class D markers having a minimum <br /> reflective face surface of 0 . 35 square inches . Use Class E markers having a minimum reflective <br /> surface area of 1 square inch . <br /> - 249 - <br /> FPID ( S ) : 423186 - 1 - 58 - 01 <br /> 77n <br /> If <br />