Division 600 — Section 606
600-62 Section 606 — Category IV Traffic Control Devices
606.1 Description 1 Provide, install, and maintain Category IV traffic control devices. 606.2 Materials 606.2.1 Trailer and Accessories 1 Ensure that each trailer -mounted arrow panel complies with South Carolina laws governing motor vehicles. Satisfy the minimum requirement for lights and reflectors including turn signals, dual taillights, and brake lights. Equip the trailer with safety chains meeting SAE J -697 standards. Paint both the trailer and the sign support Federal Standard No. 595, Orange Color No. 12246. 2 Provide a trailer with an axle weight capacity rated for no less than 2000 lb. Fabricate and equip the trailer with a single axle, springs, arrow panel support assembly, and 4 leveling or adjustable stabilizer jacks. Ensure that the unit includes a manua l crank or hydraulic system to permit one person to raise the traffic control device into its operating position. 3 Ensure that the trailer -mounted devices can remain stable in winds up to 80 mph when in the operating position. 606.2.2 Power System 1 Provide a 12- volt electrical system powered from a 12- volt DC power source or an adaptable 110- or 120- volt AC power source to operate the panel device. Equip each panel device that uses a DC electrical power source with an automatic lamp intensity regulator that maintains a constant output with a varying battery voltage and a voltage indicator or warning device that indicates when the batteries need recharging. Place the lamp intensity regulator and the voltage indicator in a convenient location for easy reading. 2 Obtain the panel device operating power from a power source mounted on the trailer on which the unit is mounted unless an adaptable 110- or 120- volt AC power source is available. Regardless of the source, ensure that the supply of electrical energy can operate the changeable message sign as required by the Plans, the Specifications, and the MUTCD. 606.2.3 Power Source 606.2.3.1 Solar Assisted Power Source 1 Provide a battery bank charged by photovoltaic solar panels and supplemented with a built -in 110- volt, 20 -amp battery charger. Ensure that the battery bank is housed in a lockable, heavy -duty, steel, weatherproof box. Ensure that the