Page 92 - Lecture Notes DCC3113

e. Rectangular
Size varies according to legend (word message/symbol) on sign.

6.2.4 The advantages and disadvantages of road studs

The advantages and disadvantages of road studs

In nighttime, car drivers could not see where the road ends and where the alignment of road changes in
direction.

The advantages of road studs over conventional line markings are :
 Greater effectiveness in wet weather
 Greater durability
 The vibration and audible noise created by vehicle tyres crossing road studs act as a secondary
warning to the driver
 The use of differently coloured reflex lenses permits the imposition of directional control upon
the motorist, e.g. to convey a ‘wrong way’ message

Disadvantages include:
 Their high initial cost
 Their susceptibility to damage during snow-clearing
 They must be attached to a high-quality surfacing that does not require an early over-lay surface
dressing.

6.3 THE CONCEPT OF TRAFFIC SIGNBOARD

6.3.1 The traffic signboard based on their functions
a. Regulation signboards
b. Warning signboards
c. Information Signboards

An example of traffic control equipment for the following traffic control equipment category:

i. Prohibition Sign: Overtake prohibition, U-Turn Prohibition, Turning Prohibition and etc.

Figure 6-10: Prohibition Sign (Source: Jabatan Kerja Raya, MANUAL ON TRAFFIC CONTROL DEVICES
STANDARD TRAFFIC SIGNS, JKR/J(Rb) 0001/80)

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