Page 113 - Lecture Notes DCC3113

Priority junction

 Three forms of priority junction are simple T-junction, staggered T-junction and crossroad
junction (not recommended)
 T- junction or staggered junction without any ghost or physical island in the major road and
without channeling islands in the minor road approach.

Simple T-junction Crossroads Staggered Junction

Figure 8-3: Priority Junction

Junction with channelization

Figure 8-4: Junction with channelization

Roundabout with and without traffic light may be applicable
for total traffic volume (sum of all directions) of up to 6000
vehicles/hour and may if the layout can be freely chosen, be
designed to cater for any distribution of turning traffic.

Figure 8-5: Roundabout with and without traffic light

Signal Controlled Intersections are applicable to very high
traffic volume of 8,000 veh/hour or more provided that the
necessary number of approach lanes are present and that there is
no interference from other nearby intersections.

Figure 8-6 : Signal Controlled Intersections

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