Describe the different types of at-grade intersections. Also give an example of an appropriate location for the use of each type.
What will be an ideal response?
The basic types of at-grade intersections are T (three-leg) intersections,
four-leg intersections, multi-leg intersections consisting of 5 or more approaches,
and traffic circles. A simple T intersection is suitable for intersections of minor
roads. Four-leg intersections are used mainly at locations where minor or local
roads cross, although it can be used where a minor road crosses a major highway.
Multi-leg intersections should be avoided whenever possible. When a multi-leg
intersection exists, one leg should be realigned, if possible, into a T intersection
with the minor road, at a distance far enough away from the 4-leg intersection to
allow for independent operation of the intersections. Traffic circles force traffic to
use the intersection in a circular pattern, thereby transforming crossing conflicts
into merging and diverging conflicts. The neighborhood traffic circle is placed for
traffic calming purposes on local streets in residential areas to reduce travel
speeds and cut-through traffic.
You might also like to view...
Which of the following statements most accurately describes a utility demand reduction program?
a. Some comfort air conditioning equipment is turned off during peak demand hours. b. The utility charges twice as much for energy during peak demand hours. c. Comfort cooling systems are only permitted to operate at night during the summer. d. Office buildings are required to close during peak demand hours.
You can use the Del or ____________________ keys to delete individual characters in Emacs.
Fill in the blank(s) with the appropriate word(s).
Schematic diagrams drawn as a series of lines and symbols that represent the electrical current path and the components of the circuit. Provides the basic circuit connection information for electronic products.
Answer the following statement true (T) or false (F)
When entering a confined space:
A) You should wear clothes that are resistant to spontaneous arcing. B) You should take a radio or cell phone for emergency calls in case you pass out. C) Another worker should be posted outside the confined space. D) You should leave a note at the entry point.