Lecture 6 - Intersections

Question 1

points of a road or highway section where traffic flow converges (and sometimes diverges), and where direction of travel changes

Answer 1

Intersections

Question 2

Intersections may be categorized according to

Answer 2

shape, type of structure and operation.

Question 3

the configuration of the intersection.

Answer 3

Shape

Question 4

dependent to number of legs.

Answer 4

Shape

Question 5

elevated highways and roads

Answer 5

Grade separation

Question 6

use of secondary roads to separate certain flows of traffic from the main traffic flow.

Answer 6

Channelization

Question 7

Adding traffic signals and warnings to reduce traffic conflicts and minimize flow rate.

Answer 7

Signalization

Question 8

Maximum number of legs is _____

Answer 8

four

Question 9

_______ should be avoided

Answer 9

Staggered intersections

Question 10

Main traffic flow should be near _______ as possible

Answer 10

straight

Question 11

Roads should _____ at a small angle

Answer 11

not intersect

Question 12

_______ intersections should be as far as possible from each other

Answer 12

2 consecutive

Question 13

______ serves the purpose of an intersection: providing change in the direction of travel

Answer 13

Turning geometry

Question 14

Conflicts may be classified as ______

Answer 14

merging, diverging or crossing conflicts

Question 15

When two minor roads intersect, traffic may arrive the approach of the intersection in ______

Answer 15

any random fashion.

Question 16

In this case, signals are necessary, but the simplest form of control is ___________

Answer 16

to have no signal at all.

Question 17

Unsignalized Intersection is ruled by the use of :

Answer 17

Traffic signs

Available gaps on the road

Right-of-way rule

Question 18

vehicle on the right has the priority

Answer 18

Right-of-way rule

Question 19

For unsignalized intersections, when the number of through is almost equal to the number of turning vehicles, it can be considered as a ______

Answer 19

roundabout.

Question 20

In roundabouts, all vehicle move __________

Answer 20

counterclockwise, one-way.

Question 21

provide the capability to travel in the counter-flow direction.

Answer 21

• U-turns

Question 22

_______ operations are very similar to roundabouts except that they favors a particular road, which is assumed to be the major road.

Answer 22

U-turn

Question 23

The control of traffic in a signalized intersection is done by _______

Answer 23

separation in time

Question 24

Eliminated the problematic crossing conflicts of the different movements of vehicles.

Answer 24

Grade Separation