Civil Engineering Reference
In-Depth Information
16.7.4 Applications of One-Way Streets
The use of one-way streets and roads was well expressed by Halsey [
21
] in his topic
“
Traf
c Accidents and Congestion,
”
in which he stated that one-way roads should
be used wherever:
balanced pairs can be found
the revised routing does not unduly detour traf
c too much, and
streets are too narrow to permit parking on each side, or to allow the effective
movement of
fire and other emergency vehicles.
16.7.5 Types of One-Way Streets
Within this context, the following types of one-way streets can be developed.
Various details are provided in current and earlier editions of the Traf
c Engi-
neering
Handbook [
2
].
Narrow streets that are usually less than 25 feet wide
Rotary movements around public parks or squares
Adjuncts or complements to freeway design
such as connections or extensions
of freeway ramps or frontage roads that are parallel to the freeway
—
Simpli
cation of complex intersections by making a minor street
“
outbound.
”
Simpli
c signal phase, allowing more green
time added to the remaining two phases (see Fig.
16.5
).
cation sometimes eliminates a traf
Fig. 16.5 Making the minor
street one-way simpli
es a
complex intersection
