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Engineer . Cost for removing conflicting pavement markings during maintenance of traffic operations to be included in Maintenance of Traffic , Lump Sum . Before applying traffic stripes and markings , remove any material by a method approved by the Engineer that would adversely affect the bond of the traffic stripes . Before applying traffic stripes to any Portland cement concrete surface , apply a primer, sealer or surface preparation adhesive of the type recommended by the manufacturer . Offset longitudinal lines at least 2 inches from any longitudinal joints of Portland cement concrete pavement . Apply traffic stripes or markings only to dry surfaces , and when the ambient air and surface temperature is at least 50°F and rising for asphalt surfaces and 60 ° F and rising for concrete surfaces . Apply striping to the same tolerances in dimensions and in alignment specified in 710- 5 . When applying traffic stripes and markings over existing markings , ensure that not more than 2 inches on either end and not more than 1 inch on either side of the existing line is visible . Apply thermoplastic material to the pavement either by spray, extrusion or other means approved by the Engineer. Conduct field tests in accordance with FM 5 - 541 . Remove and replace traffic stripes and markings not meeting the requirements of this Section at no additional cost to the ° Department . Apply all final pavement markings prior to opening the road to traffic . SUBARTICLE 711 -4 . 3 (Page 802 ) is deleted and the following substituted : 711 -4 .3 Retroreflectivity : Apply white and yellow traffic stripes and markings that will attain an initial retroreflectivity of not less than 450 mcd/lx • m2 and not less than 350 mcd/lx • m2 , `. respectively for all longitudinal lines . All transverse lines , messages and arrows will attain an F initial retroreflectivity of not less than 300 mcd/lx • rn and 250 mcd/lx • rn for white and yellow respectively. All pedestrian crosswalks , bike lane symbols or messages in a proposed bike lane 1 shall attain an initial retroreflectivity of not less than 275 mcd/lx , m2 . Measure , record and certify on Department approved form and submit to the Engineer, the retroreflectivity of white and yellow pavement markings in accordance with Florida Method FM- 5 - 541 . The Department reserves the right to test the markings within three days of receipt of the Contractor ' s certification . The test readings should be representative of the Contractor ' s g striping performance . If the retroreflectivity values measure below values shown above , the striping will be removed and reapplied at the Contractor ' s expense . i ARTICLE 711 -7 (Page 803 ) is deleted and the following substituted : 711 -7 Observation Period . Pavement markings are subject to a 180 day observation period under normal traffic . The observation period shall begin with the satisfactory completion and acceptance of the work . The pavement markings shall show no signs of failure due to blistering , excessive cracking, chipping, discoloration, poor adhesion to the pavement, loss of reflectivity or vehicular t ' vi shall meet the initial requirements of 711 -4 . 3 . The Department damage . The retroreflectivity ty q reserves the right to check the color and retroreflectivity any time prior to the end of the observation period . - 199 - FPID (S ) : 423186 - 1 - 58 - 01 sr ,