Traffic management

Table of Contents

Appendix I 2 Signalised Intersection with Bus Priority

The intersection shown in Figure I 4 provides an example of bus priority phases, including a special phase and an early start for buses.

In Figure I 4, a bus lane approaches from Cheltenham Road that turns right onto Kingsclere Avenue. Signal Group 8 is assigned exclusively to the bus lane (Figure I 5). As shown in the phasing diagram (Figure I 6), a special right turn phase for buses operates during Phase E.

During Phases B, G1 and G2, buses turn right with general vehicular traffic (i.e. SG5). However, buses (i.e. SG8) receive an early start. A single aspect white ‘B’ display is used to facilitate the special bus phase and early start operation. For further guidance on bus signal displays, refer to Part 10 of the Guide to Traffic Management (Austroads 2019d).

Controller timing settings are shown in Table I 2.

Figure I 4: Location diagram and detector map

Source: VicRoads (n.d.), (unpublished).

Figure I 5: Control group allocation

Source: VicRoads (n.d.), (unpublished).

Figure I 6: Phasing diagram

Source: VicRoads (n.d.), (unpublished).

Table I 2: Controller timing settings

DescriptionTime setting no.Phase
A
(1)
B
(2)
C
(3)
D
(4)
E
(5)
F
(6)
G
(7)
Red/yellow1
Late start2111
Minimum green31011685811
Increment4
Maximum initial green*5
Maximum extension green630002002020
Early cut off7
Yellow84.54.54.53.53.04.03.0
All red92.02.52.54.02.53.04.0
Special all red104.04.03.54.02.5
Gap 1112.52.52.52.52.52.5
Gap 2122.52.52.52.53.5
Gap 3132.52.52.52.5
Gap 414
Headway 1150.40.41.21.20.60.6
Headway 2161.20.60.40.60.6
Headway 3170.41.20.61.2
Headway 418
Waste 119777777
Waste 220777710
Waste 3217777
Waste 422
* Maximum initial green = minimum green + variable initial green.
Pedestrian time settings
DescriptionTime setting no.Pedestrian
P1
(17)
P2
(18)
P3
(19)
P4
(20)
P5
(21)
P6
(22)
P7
(23)
P8
(24)
Delay1
Walk*215.015.015.0
Clearance 134.07.011.0
Clearance 242.03.0
* Minimum walk time – used in Isolated and Flexilink operation.
Special purpose time settings
Time setting noTime setting
(Range: 0–200)
Function
94SG 5 and SG 9 special maximum in GØ (XSF 5)
104SG 6 special maximum in GØ (XSF 6)
115Timer 'A' – SG 8 early start
126BØ alternate minimum green (ref. page 4/3)
136GØ alternate minimum green (ref. page 4/3)

Source: VicRoads (n.d.), (unpublished)