Four-Lane Undivided Highways

A 4-lane undivided highway is the narrowest highway on which each traffic lane is intended to be used by traffic in one direction and passing the accomplished on lanes not subject to use by opposing traffic. The ability to pass without traveling in the lane of opposing traffic results in a freer and smoother operation and a large increase in highway ______ over that of two-lane highways.

Median of 1.20 to 1.80 meters wide are acceptable under restricted condition, but whenever feasible, medians should be made 4.50 to 18.50 meters wide and preferably wider to obtain full advantage of traffic separated and to fit intersection design at ______.

Undivided highways with four or more lanes are most applicable in ______ and sub-urban areas where there is concentrated development of adjacent land.

Although highways with widely separated roadways may be particularly suitable to certain topographic conditions, there are other advantages which may be derived among which are easy vehicle operation, pleasing appearance and better ______.

Where there is appreciable length of a widely divided highway, and occasional open view between the two roadways is desirable to make evident their ______ operation.

The ability to pass without traveling in the lane of opposing traffic results in a freer and smoother operation and a large increase in highway ______ over that of two-lane highways.

An important pre-requisite for the selection of traffic and environmental improvements to streets is to find a satisfactory balance between the requirements of accessibility and ______.

The basic principle of a functional road classification system is to ensure that each road is able to serve its proper ______.

The arterial road network should provide sufficient capacity and directness to accommodate through traffic movement ______ and efficiently.

Introducing restrictions in the local street system helps to ______ through traffic.

The right-of-way is a general term denoting land, property, or interest acquired and reserved for ______ purposes.

A technique that can assist in the planning of improvement is to classify roads according to their basic ______.

One means of minimizing traffic congestions in a radial system is to provide ______ streets or avenues to connect the radial route.

Through Streets or Through Highway give vehicular traffic ______ right of way.

A Parkway is an arterial highway for ______ traffic.

A Freeway is an expressway with full control of ______.

Circumferential highways connect the radial roads to prevent passing through the ______ of the city.

Highway is a general term denoting a public way for the purpose of ______ travel.