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T.P.D.M.V.2.4
APPENDIX 1 !
Calculation of Capacity at Priority Junctions
The predictive equations discussed in paras. *J.3.6 are :-
... (1)
(2)
C. B
(3)
(where Y = (1-0.0345W)}
In each of these equations the geometric parameters represented by D, F
and F are stream-specific :-
D = Cl+0.094(w_ .-3.65)3[1+0.0009(V _ A-120)K1+0.0006(V._ .-150)3
B-A rB-A IB -A
E = [1+0.094(w B _ c -3.65)3[1+0.0009(V rB _ c -l20)3
F = r tJ-3.65)3Cl+0.0009(V_ --120)3
C— & rc-»B
The symbols represent the following :-
Q
B~A
= the capacity of movement B-A
q. n s the design flow of movement
A—o
A~B and so on
) See Drg. No* 4.3.A.1
) Capacities and flows are
} in pcu/hour (1 HGV a 2 pou)
W
a major road width
CK
a central reserve width (kerbed
median only)
) See Drg. No. 4*3.A.2
fi
A
B~A
a lane width available to vehicle ) See Drg, No. 4.3.A.3
i
waiting in stream B-A, and so on )