Illinois uses Type I or Type II nonremovable marking tape or paint at the option of the contractor, except paint is not allowed for final wearing surfaces unless authorized by the engineer for late-season applications where tape adhesion would be a problem. Type III removable marking tape is used on the final wearing surface when the temporary pavement marking will conflict with the permanent pavement marking such as on tapers, crossovers, and lane shifts.
The markings have provided adequate wet-weather guidance. IDOT has experimented with wet-weather tapes but does not yet have a feel for whether they were any more effective. Below are state specifications for tapes.
1095.06 Pavement Marking Tape. White or yellow marking tape shall consist of glass spheres of high optical quality embedded into a binder on a suitable packing that is precoated with a pressure sensitive adhesive. The spheres shall be of uniform gradation and distributed evenly over the surface of the tape.
The material shall be white or yellow as specified. The colors shall conform closely to Federal color tolerances for pavement marking paint. The white and yellow tape shall be readily visible when viewed under automotive headlights at night. Reflective values, measured in accordance with the photometric testing procedure of ASTM D4061, shall not be less than those listed in the table below. The Coefficient of Retroreflected Luminance R1 shall be expressed as average millicandelas/lux/sq m (millicandelas/foot candle/sq ft), measured on a 600 mm x 300 mm (2 ft x 1 ft) panel at 86 degree entrance angle.
The pavement marking tape shall have a precoated pressure sensitive adhesive and shall require no activation procedures. Test pieces of the tape shall be applied according to the manufacturer’s instructions and tested according to ASTM D 1000, Method A, except that a stiff, short bristle roller brush and heavy hand pressure will be substituted for the weighted rubber roller in applying the test pieces to the metal test panel. Material tested as directed above shall show a minimum adhesion value of 30 g/mm (750 g/in.) width at the temperatures specified in ASTM D 1000. The adhesive shall be resistant to oils, acids, solvents, and water, and shall not leave objectionable stains or residue after removal. The material shall be flexible and conformable to the texture of the pavement.
Type III tape shall be capable of performing for the duration of a normal construction season and shall then be capable of being removed intact or in large sections at pavement temperatures above 4 degrees Celsius (40 degrees Fahrenheit) either manually or with a rollup device without the use of sandblasting, solvents, or grinding. The Contractor shall provide the Engineer certification, from the manufacturer of the Type III tape, that the material to be furnished meets the requirements for being removed after the following minimum traffic exposure based on transverse test decks with rolling traffic:
(a) Time in place – 400 days
(b) ADT per lane – 9,000 (28 percent trucks)
(c) Axle hits – 10,000,000 minimum
The pavement marking tape, when applied according to the manufacturer’s recommended procedures, shall be weather resistant and shall show no appreciable fading, lifting, or shrinkage during the useful life of the marking. The tape, as applied, shall be of good appearance, free of cracks, and edges shall be true, straight, and unbroken.
Topics: Temporary Pavement Markings