Briefly describe the different principles involved in the design of at-grade intersections.
What will be an ideal response?
The fundamental objective in the design of at-grade intersections is to
minimize the severity of potential conflicts both among different streams of traffic
and between pedestrians and turning vehicles while facilitating smooth traffic
flow. The design should therefore incorporate the operating characteristics of both
the vehicles and pedestrians using the intersection. The design of an at-grade
intersection involves the design of the alignment (horizontal and vertical) of the
intersecting roadways, the design of a suitable channeling system, the
determination of the minimum required widths of turning roadways when traffic
is expected to make turns at speeds higher than 15 mi/h, and the assurance that
sight distances are adequate for the type of control at the intersection.
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It is desirable for the sensor to produce a certain amount of ____________________ instead of a certain amount of voltage because it eliminates the problem of voltage drop on lines.
Fill in the blank(s) with the appropriate word(s).
Explain how a top view is developed.
What will be an ideal response?
What should a technician do with a DOT 39 nonrefillable cylinder when it is empty?
A) The cylinder should be returned to the refrigerant manufacturer to be reused. B) Knock out the relief disk to remove the residual refrigerant and label the cylinder empty. C) Recover any remaining refrigerant, open the valve, knock out the relief disk, and label it EMPTY. D) Once most of the refrigerant has been used, the residual may be released to the air.
__________ normally are white rectangles with black letters or symbols.
a. warning signs b. destination signs (guide signs) c. regulation signs (regulatory signs)