MIL-HDBK-1110
b) Specification TT-P-110, Paint, Traffic, Black
(Nonreflectorized) is for a solvent-based, black,
nonreflectorized traffic paint generally made with alkyd binders.
It is used mostly to outline white or yellow markings to make
them stand out or to obliterate old markings on asphalt
pavements. Such paints are not VOC-conforming, and there is no
specification for a black water-based marking paint.
c) Specification TT-P-115, Paint, Traffic (Highway,
White and Yellow) is for a solvent-based traffic paint, available
in white and yellow. Once, this specification called for alkyd
formulations for conventional-dry paints and chlorinated rubber-
alkyd formulations for fast dry types. This is no longer the
case. Because of VOC and safety concerns described below, this
specification is no longer recommended.
d) Specification TT-P-1952, Paint, Traffic and
Airfield Marking, Water Emulsion Base is for a water-based
traffic and marking paint, available in white or yellow.
Currently, there are no environmental restrictions on its use.
Acrylic and polyvinyl acetate resins are most frequently used in
paints conforming to this specification.
e) Specifications TT-P-85, TT-P-115, and TT-P-1952 are
formulated to permit glass beads to be dropped into the wet paint
immediately after spray application to provide night
retroreflectivity. Coarse beads are evenly dropped into wet
TT-P-87 paint to impart immediate retroreflectivity.
5.20.1.2 Specification for Reflective Glass Beads.
Specification TT-B-1325, Beads (Glass Spheres) Retro-Reflective
is for beads (glass spheres) to impart retroreflectivity to
painted markings. Lights from a plane or car are reflected back
to the eyes of the pilot or driver. Type I (low index of
refraction) is intended for use on roads. It is available in
Gradations A (coarse-drop on), B (fine-premix), and C (fine-drop
on). Type II (medium index of refraction), Gradation A (coarse-
drop on) is not commercially available today. Type III (high
index of refraction) is intended for use on airfield pavements.
5.20.1.3 Application of Painted Markings. Although the five
above marking paint specifications are different from each other,
each is applied at about the same thickness. Some achieve this
by specifying a 15-mil wet film thickness, which results in a dry
film thickness of half that, since they contain 50 percent solids
by volume. Others specify a spreading rate of 100 to 110 square
feet per gallon. The water-based paint of specification
TT-P-1952 must be applied at temperatures at or above 45 degrees
F. The other products, which are solvent based, can be applied
at even lower temperatures. Surfaces to be marked must be well
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