Page 112 - Lecture Notes DCC3113

JUNCTION DESIGN

8.1 THE FUNDAMENTAL CONCEPT OF JUNCTION

8.1.1 Junction

A road junction is where two or more roads either
meet or cross at grade (they are at the same level)
or different levels (interchange). Such a road
junction may also be called a crossroads.

8.1.2 The factors that affect junction load

 Geometrical design and traffic control
devices
 Total or length wide
 Distribution design
 Turning radius Figure 8-1: Junction

8.1.3 The types of movement at a junction

 Junction without signage / control
 Priority junction
 Junction with channelization
 Roundabout with and without traffic light
 Signal Controlled Intersections
 Grade Separated Intersections (Intercharges)

Junction without signage / control

Figure 8-2: Junction without signage/control
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