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<br /> All pedestrian crosswalks , bike lane symbols and messages in a proposed bike lane shall attain
<br /> IN initial retroreflectivity of not less than 275 mcd/lx , m2 .
<br /> 971 -6 . 5 . 2 Skid Resistance : The surface of the stripes and markings shall provide
<br /> a minimum skid resistance value of 35 BPN (British Pendulum Number) when tested according
<br /> to ASTM E 303 . Bike lane symbols and pedestrian crosswalks shall provide a minimum skid
<br /> resistance value of 55 BPN .
<br /> 971 -6. 5 .3 Durability : Durability is the measured percent of thermoplastic
<br /> material completely removed from the pavement . The thermoplastic material line loss must not
<br /> exceed 5 . 0 % at the end of the service life .
<br /> 971 -6 . 6 Application Properties : Application properties shall meet the requirements of
<br /> Section 711 .
<br /> 971 -6 . 7 Packing and Labeling : The thermoplastic material shall be packaged in suitable
<br /> biodegradable or thermo - degradable containers which will not adhere to the product during
<br /> shipment and storage .
<br /> 971 -7 Permanent Tape Materials for Pavement Stripes and Markings .
<br /> 971 -7 . 1 General : The materials for pavement stripes and markings shall consist of white
<br /> or yellow weather-resistant reflective film as specified herein . The markings are divided into two
<br /> classes : Standard and High Performance . The classes are differentiated by their durability and
<br /> retroreflectivity. The pigment, glass spheres , and filler shall be well dispersed in the resin .
<br /> However, the requirements delineated in this Specification and Section 713 shall apply. The
<br /> material shall be free from all skins, dirt and foreign objects .
<br /> 971 -7. 2 Composition : The pavement stripes and markings shall consist of high - quality
<br /> plastic materials , pigments , and glass spheres uniformly distributed throughout their cross -
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<br /> sectional area, with a reflective layer of spheres embedded in the top surface .
<br /> 971 -7.3 Skid Resistance : The surface of the stripes and markings shall provide a
<br /> minimum skid resistance value of 35 BPN (British Pendulum Number) when tested according to
<br /> ASTM E 303 . Bike lane symbols and pedestrian crosswalks shall provide a minimum skid
<br /> resistance value of 55 BPN.
<br /> 971 -7.4 Thickness : The Qualified Products List will list the specified thickness of each
<br /> approved product,
<br /> 971 -7. 5 Durability and Wear Resistance : When properly applied, the material shall
<br /> provide neat, durable stripes and markings . The materials shall provide a cushioned resilient
<br /> substrate that reduces sphere crushing and loss . The film shall be weather resistant and, through
<br /> nornal wear, shall show no significant tearing, rollback or other signs of poor adhesion .
<br /> Durability is the measured percent of pavement marking material completely removed from the
<br /> pavement . The pavement marking material line loss must not exceed 5 . 0 % of surface area at the
<br /> end of its service life ,
<br /> 971 - 7. 6 Conformability and Resealing : The stripes and markings shall be capable of
<br /> conforming to pavement contours , breaks and faults under traffic at pavement temperatures
<br /> recommended by the manufacturer. The film shall be capable of use for patching worn areas of
<br /> the same types of film in accordance with the manufacturer ' s recommendations .
<br /> 971 -7 . 7 Tensile Strength : The stripes and markings shall have a minimum tensile
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<br /> strength of 40 psi when tested according to ASTM D 638 . A rectangular test specimen
<br /> 6 by 1 by 0 . 05 minimum thickness shall be tested at a temperature range of 40 to 80°F using a
<br /> jaw speed of 0 . 25 inch/min .
<br /> -230 -
<br /> FPID ( S ) : 4231864 - 58 -01
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