MSTHC Terms

53問 • 2年前

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Refers to surveying streams, lakes, reservoirs, harbors, oceans and other bodies of water.

Hydrographic Survey

The maximum number of vehicles that pass a point on a highway during a period of 60 consecutive minutes. This volume is used for functional classification of highways, geometric design standard selection, capacity analysis, development of operational programs, and development of parking regulations.

Peak-Hour Volume

The average of 24-hour traffic counts collected every day in the year. This counts are used to estimate highway user revenues, compute accident rates, and establish traffic volume trends.

Annual Average Daily Traffic

The average of 24-hour traffic counts collected over a number of days greater than 1 but less than a year, this counts are used for planning of highway activities, measuring current traffic demand and evaluating existing traffic flow.

Average Daily Traffic

A measure of travel usage along a section of road. It is the product of the volume (ADT) and the length of roadway in miles to which the volume is applicable. This measure is used mainly as a base for allocating resources for maintenance and improvement of highways and to establish highway system usage trends.

Vehicle miles of travel

Minimum sight distance required on two-lane two-way highway that will permit to complete a passing maneuver without colliding with an opposing vehicle and without cutting on the past vehicle.

Passing sight distance

The length of superelevation development from zero cross-slope two full design superelevation and in a circular curve alignment.

Superelevation Run-off

Distance traveled by the vehicle after the application of the brakes until it will stop.

Braking distance

The distance ahead that must be clear to permit safe passing.

Passing sight distance

The ratio between parallel forces divided by the normal forces (in banking of curves).

Both a and b (skid resistance, coefficient of friction)

The time taken for final action.

Volition time

The time elapsed during emotional sensations and disturbance such as fear anger or any other emotional feelings with reference to the situation.

Emotion time

The reaction time to be used for road safety design.

2.5 seconds

The time taken from the instant the object is visible to the driver to the instant the brakes are effectively applied.

Reaction time

The time required for a driver to realize that breaks must be applied it is the time from the instant the object comes on the line of sight of the driver to the instant he realizes that the vehicle needs to be stopped.

Perception time

It is defined as the number of vehicles per unit distance occupying a section of roadway at a given instant time and is usually measured in vehicles per mile or km.

Density

The number of vehicles moving in a specified direction on a given line or roadway that pass a given point during specified unit time and is usually expressed as vehicles per hour or vehicles per day.

Traffic volume

Waves formed by moving ships or boats are called?

Wakes

Waves formed by earthquake disturbances.

Seismic Wave

Waves formed by gravitational attraction between the moon and the sun.

Tides

The spread of energy along a wave crest is called?

Diffraction

The bending of waves as they slow down is called?

Refraction

Waves that have propagated beyond the initial waves that generated them are called:

Swell

The time that the wind blows across the water.

Duration

The highest tide which occurs at intervals of half a lunar month when the sun moon and earth fall in line.

Spring tides

The lowest tide of the month when the lines connecting the earth with the sun and the moon forms a right triangle that is when the moon is in its quarter is called:

Neap tides

Tides that occurs twice its lunar day is called:

Diurnal tide

The circulation of masses of air more or less parallel to the earth's surface.

Wind

The graphical representation of the direction frequency and intensity of wind at a particular location over a period of time is known as:

Wind rose

A scale used to measure the intensity and free of winds is called:

Beaufort's scale

The higher of the to high waters of any the diurnal tide is called:

Higher high water

The height of the mean high water above the mean low water.

Mean range

The mean of the height of mean high water above the mean low water is referred to as:

Mean sea level

The tidal current setting into the base and estuaries along the coast is called:

Flood current

The regular periodic rise and fall of the surface of the seas survival along the shores is called:

Tide

The flow of seawater in the horizontal direction that accompanies a title variation of sea level and thus periodic.

Seiche

The straight line of stretch of open water available for a growth without interruption of land is called:

Fetch

The structure that protects the harbour from stormy waves and permits calm in the harbor

Breakwater

A solid structure which projects into the sea perpendicular to the show to berth vessel, is called

Jetty

A platform built parallel to the shore within the harbor to berth vessel is called

Wharf

A platform built in the harbor parallel to the shore and backed up by ground is called

Quay

A berth structure projecting out from the shoreline

Pier

A sheltered place where the ship may receive or discharge cargo. It includes the harbor with its approach channels and anchorage places

Port

A breakwater is a structure constructed for the purpose of forming an artificial harbor with a water area so protected as to provide safe accommodations for shipping. When a breakwater supports a roadway, this is called:

Mole

Standard sign shape for directional signs, roadwork signs, signs for special purposes, and supplementary plates for warning signs.

Rectangle

Signs to warn motorists of potentially hazardous conditions on or adjacent to the road.

Warning signs

The return current toward the sea is called:

Ebb current

Divided arterial highway for through traffic with full or partial control of access and generally with grade separations at major intersections.

Expressway

The length of super elevation development from normal cross slope to the zero cross slope point on the tangent.

Tangent run out

Type of sign used in advance of an intersection where two roads cross at a common point.

Crossroad sign

When a design speed for a road project, the ff. factors need to be considered: I. Function of the road II. Anticipated operating speed III. Anticipated speed limit IV. Economics

All of the above

The capacity of a route can be affected by the following factors:

All of the above

The ff. are vulnerable road users: 1. Pedestrians 2. People with disabilities 3. Non-motorized vehicles 4. Motorcycles 5. Dilapidated vehicles

1, 2, 3 and 4 only

Littons part 2-0314

Ian Calasang · 60問 · 2年前

Littons part 2-0314