(3)
Road Classification.
Another element of information you may be asked to gather
is the road classification.
This should not be confused with route
classification. Route classification deals with the overall route while the
road classification deals only with the road itself.
It provides more
detailed
information
than
does
the
route
classification.
Road
classification data is normally gathered in detail by the engineers.
MP
must be knowledgeable about it however.
They may be provided this
information at the outset of the recon mission.
Just as the route classification is expressed as a formula,
so too is the road classification. This standardized sequence consists of
seven parts, as follows:
(a) Prefix. The formula is prefixed by the letter "A" if
there
are
no
limiting
characteristics.
If
there
are
limiting
characteristics the letter "B" is used.
(b) Limiting Characteristics.
This is a series of
specified small letters, each of which indicates a limiting characteristic.
They are as follows:
c
Curves with a radius of less than 25 meters.
g
Gradients of 7 percent or more.
d
Inadequate drainage.
f
Unstable foundation.
s
Rough surface condition.
j
Camber is excessive.
An unknown or undetermined characteristic is indicated
by a question mark following the symbol to which it refers. For example, d?
would indicate that there is some question about the adequacy of drainage.
(c) Width.
The width of the traveled way is listed,
followed by a slash and the overall width of the road including the
shoulders.
For example, 14/16m would describe a road that has a traveled
way of 14 meters and an overall width of 16 meters.
(d) Road Surface Material.
The road surface material is
expressed by a small letter symbol as follows:
k
Concrete.
kb
Bituminous/asphalt concrete.
p
Paving brick or stone.
rb
Bitumen-penetrated macadam, water bound macadam with
asphalt or tar covering.
r
Waterbound macadam, crushed rock or coral.
l
Gravel or lightly metaled surface.
MP1028
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