Classification System

1.        The system of classification of motor vehs and brs is standard for all Allied Forces in
    the CMF.

2.        Under this system, a veh may only cross brs bearing classification numbers which are
    the same or greater than its own classification.  A veh of Class 12 may cross any br marked
    12 or over, but must not cross brs marked with classification less than 12.

3.        Vehs are classified according to their normal loads.  Overloaded vehs must not therefore
    cross brs with classification just equal to the normal veh classification.

Br Classification

5.        Brs are classified as follows:  5, 7, 9, 12, 16, 18, 20, 24, 28, 30, 35, 40, 50, 60 and 70.
    Each number represents the maximum "class" of veh which may safely cross the br concerned.
    The class number indicates roughly the weight of veh (distributed load) which can pass
    safely over the br of the same class.

6.        Each br will be marked with a sign showing its class.  In addition, rd signs will be put
    up at suitable posns on the approaching rd to classify the rd and permit diversion of traffic if
    necessary.

7.        Comds are responsible for making plans for the diversion of traffic which is too heavy for
    brs on main traffic routes and for the necessary staff control.

Veh Classification

8.        It is important to note that these classification numbers are not necessarily the tonnage
    weights of the vehs , although in the case of tracked vehs they do closely approximate it.  They
    are arrived at from consideration of axle loading, distances between axles and impact factor.
    The class of veh should looked upon merely as ref numbers to permit the comparing of br
    and veh classes and thus provide a simple method of determining what brs particular vehs
    can safely pass over them.

9.        In the case of a veh temporarily towing another, the classification of the train will be
    the SUM of the individuall classifications of the separate vehs.  A class 9 veh towing a
    similar veh will therefore have a classification of 18 and may cross a br of Class 18 or above.

10.    Veh which are normally towed, such as a tractor with its gun or a truck towing a trailer
    are classified as follows:

        (a) The tractor or towing veh has a double classification as shown below.  The upper
          number indicates the class of the complete train and the lower number the class
          of the tractor alone:

           (b) The trailer  also is given two classes, one above the other, the upper numeral
            indicates its load when in tow.  The bottom number gives the actual classification
            of the trailer alone, in case it should be reqd to manover the trailer across a bridge
            on its own:

            The upper figure on the trailer marking is a constant which must be added to
            the classification of the towing veh reguardless of whether the towing veh is the
            normal tractor for that trailer.  For example, a trailer marked:

            must, if manhandled, not cross a br of classification less than 5.  If the trailer is
            towed with a class 10 veh, it may cross a br not lower that a class 12 (10+2)

11.        A tk trptr is given a double class sign similar to that on a tractor, but in this
            case the upper number will indicate the laden weight and the lower number
            the unladen weight

Responsibilities

12.    Comds of units will be responsible that all units vehs carry correct classification signs.

13.     The Engrs are responsible that rds and brs are properly marked.
 

Bridge Classes 1940 (in tons)
5, 9, 12, 18, 24

Bridge Classes 1944 (in tons)
5, 9, 12, 16, 18, 20, 24, 28, 30, 35, 40, 50, 55, 60, 70