Page 87 - Lecture Notes DCC3113

 Speed of traffic
 Capacity of roadway
 Traffic signal operation (effect on existing vehicle detectors)

c) Seasonal changes and weather.
 Maintaining traffic control during seasonal shutdowns
 loss of visibility and damage to devices during rain
 maintenance of traffic control devices (cleaning, cutting vegetation away from signs)

6.1.5 The types of material and color used in preparing road sign/marking

Road pavements may be marked by one or more of the following materials:

i. Paint (reflectorised and nonreflectorised)

Only road line paints conforming to M.S. 164:1973,
tested and approved by SIRIM shall be used. Paint is
best used in situations and on roads where the
markings are not subjected to heavy traffic wear.

Figure 6-2: Paint

ii. Thermoplastics (reflectorised and non-reflectorised)

Thermoplastics used shall be of the hot-applied
thermoplastics material conforming to B.S 3262 or the
equivalence. This material is applied hot and sets on
laying. It has good durability and is recommended to
be used in heavily travelled urban areas and in main
highways with high traffic densities. All road centre
lines shall be in thermoplastics.

Figure 6-3: Thermoplastics

iii. Preformed tapes

Markings in this material take the
form of plastic sheet attached to the
carriageway surface by means of an
adhesive. The markings must be
patterned or embossed in order
secure satisfactory resistance to
skidding. It can be used as
temporary markings because it can
be removed easily even after an
extended time period.

Figure 6-4: Preformed tapes

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