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D11 - ENGINEERING DIVISION. TRAFFIC STRIPES & TRAFFIC SIGNS. VISIBILTY DURABILITY COST. Traffic Signs and Stripes are one of the Most Cost-effective Means of Improving Highway Safety. The Cost of Traffic Sign Panels and Stripes is Minimal Compared to the Total Project Cost < 4%.
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TRAFFIC STRIPES & TRAFFIC SIGNS VISIBILTY DURABILITY COST
Traffic Signs and Stripes are one of the Most Cost-effective Means of Improving Highway Safety The Cost of Traffic Sign Panels and Stripes is Minimal Compared to the Total Project Cost < 4%
TRAFFIC STRIPES PAINTTOHIGH REFLECTIVE THERMO
PAINT STRIPES • D-11 has 4,000 lane miles • Up until 2010 District 11 used paint stripes • Paint Life Expectancy < 1 Year • To maintain visibility Caltrans MTCE crew had to refresh the paint stripes on a yearly basis • Total Yearly Cost = $3,000,000 million Issues: Safety + Labor Cost + Material Cost
THERMOPLASTIC STRIPES In 2009 we Started Experimenting with THERMOPLASTIC STRIPES HEATED-PLASTIC & REFLECTIVE BEADS • Layer #1 heated thermo, 400-440 degrees • Layer #2 Glass beads on top of the thermo
THERMOPLASTIC STRIPES THERMOPLASTIC CLOSE-UP VIEW
THERMOPLASTIC STRIPES HEATED THERMOPLASTIC TANK BEADS TANK NOZZLES THERMOPLASTIC TRUCK
THERMOPLASTIC STRIPES SPRAY NOZZLES
THERMOPLASTIC STRIPES • D-11 Started Experimenting 2009 • Reflectivity Value: White = 250 Yellow = 150 IN 2010 DISTRICT-11 SWITCHED STRIPES ALL THERMO COST PER YEAR OF SERVICE
HIGH REFLECTIVE THERMOPLASTIC STRIPES • D-11 Started Experimenting 2011 • Layer #1 Heated Thermoplastic Material • Layer #2 Highly Reflective Glass Beads • Layer #3 Standard Glass Beads • Cost $/LF in 2011 = $0.42 • Cost $/LF in 2014 = $0.32
COIN (DIME) HIGH REFLECTIVE BEADS STANDARD BEADS DRY BEADS CLOSE-UP
HIGH REFLECTIVE BEADS STANDARD BEADS DRY BEADS CLOSE-UP
RETROREFLECTIVITY IN (MCDM-2LX-1) YELLOW STRIPES 3X RETROREFLECTIVITY WHITE STRIPES RETROREFLECTIVITY COMPARISON
Standard Thermo VsHigh Performance Thermo HIGH PERFORMANCE THERMOPLASTIC HAS: • ALMOST THE SAME COST • 3X TIMES THE RETROREFLECTIVITY • HIGH VISIBILITY DURING DRY & WET WEATHER IN 2012 D-11 SWITCHED STRIPES TO ALL HIGH REFLECTIVE THERMO DISTRICT-11 IS CURRENTLY USING ENHANCED THERMOPLASTIC ON ALL NEW PROJECTS D11 - STRIPING CONCLUSION
WHAT IS NEXT IN FOR STRIPING?
SIGN SHEETING Reflectivity Durability Cost
RETROREFLECTIVE SHEETING TYPES WHICH TYPE SHOULD WE USE?
Retroreflectivity is defined as the light that returns to the light source RETROREFLECTIVITY
SAVINGS & BENEFITS - TYPE XI • REDUCE INFRASTRUCTURE COST • REDUCE ELECTRICAL ENERGY COST • INCREASE SAFETY • REDUCE MAINTENANCE COST (Bulbs, Copper Theft) IN 2012 D-11 SWITCHED TO TYPE XI SHEETING FOR ALL SIGNS “2015 LIGHTS OUT”
JULY 2014 - TYPE XI SHEETING STATEWIDE STANDARD FOR GUIDE SIGNS TYPE XI SHEETING A STATEWIDE STANDARD
OTHERS REASONS FOR BETTER & BRIGHTER SIGNING & STRIPING MATERIALS
MUTCD MINIMUM MAINTAINED RETROREFLECTIVITY LEVELS MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES REPLACE NON-COMPLIANT WARNING AND REGULATORY SIGNS 2015 REPLACE GUIDANCE AND STREET NAME SIGNS 2018
NOW MORE THAN EVER WE NEED BRIGHTER SIGNING & STRIPING ELDERLY BABY BOOMERS POPULATION IS GROWING