Civil Engineering Reference
In-Depth Information
Fig. 7.8 Inadequate driveway geometry creates conflicts and congestion.
Source
Reference [
3
],
p. 86. Fig. 8.32
Fig. 7.9 Six leg intersection
This condition reduces the time available at each approach to serve the
approaching volume and creates a capacity de
ciency that will result in con-
gested conditions during heavy traf
c periods.
Offset Intersections: Offset intersections tend to over-load major roadways,
complicating signal timing and sometime creating left-turn storage de
ciencies.
Examples are shown in (Figs.
7.10
and
7.11
).
Offset Freeway Alignments
:
Offset freeway interchanges result in the double
loading of the common freeway segment (Fig.
7.12
). Unless carefully designed
