Looksfam - Terms Flashcards
(142 cards)
1
Q
Device mounted on a fixed support (permanent signs) or portable support (temporary signs) whereby a specific message is conveyed by means of words or symbols placed or erected for the purpose of regulating, warning, or guiding traffic.
a. Traffic Signs
b. Regulatory Signs
c. Warning Signs
d. Guide Signs
A
a. Traffic Signs
2
Q
Signs that inform road users of the traffic laws and regulations which is disregarded will constitute an offense.
a. Traffic Signs
b. Regulatory Signs
c. Warning Signs
d. Guide Signs
A
b. Regulatory Signs
3
Q
Signs that instruct road users to meet certain traffic rule requirements on road condition.
a. Traffic Signs
b. Warning Signs
c. Regulatory Signs
d. Special Instruction Signs
A
d. Special Instruction Signs
4
Q
Signs which warn road users of condition on or adjacent to the road maybe unexpected or hazardous.
a. Roadwork Signs
b. Warning Signs
c. Regulatory Signs
d. Special Instruction Signs
A
b. Warning Signs
5
Q
Signs which warn or advise temporary hazardous conditions that could endanger road users, or the men and equipment engaged on roadworks.
a. Roadwork Signs
b. Warning Signs
c. Regulatory Signs
d. Special Instruction Signs
A
a. Roadwork Signs
6
Q
Signs which provide means of displaying essential traffic information on wide multi-lane roads, where some degree of lane use control is required or where side of road CLEARANCE is insufficient to accommodate a roadside sign.
a. Guide Signs
b. Traffic Signs
c. Chevron Signs
d. Overhead Signs
A
d. Overhead Signs
7
Q
Signs which inform and advise road users of directions, distances, routes, and the location of services for road users and point of interest.
a. Guide Signs
b. Traffic Signs
c. Chevron Signs
d. Overhead Signs
A
a. Guide Signs
8
Q
Signs used to guide drivers through a change in HORIZONTAL alignment of the road.
a. Guide Signs
b. Traffic Signs
c. Chevron Signs
d. Crossroad Signs
A
c. Chevron Signs
9
Q
Signs used for intersections
A
Crossroad Signs
10
Q
Highway appurtenances designed to prevent vehicular penetration from the travel way to areas behind the barrier such as to minimize damage to impacting vehicles and their occupants, and to reduce the risk of injuries to pedestrians and workers.
A
Barriers
11
Q
Light retro-reflecting devices mounted at the side of the roadway, in series, to indicate the roadway alignment.
A
Delineators
12
Q
Warning devices used to supplement other controls and devices necessary to alert motorists of construction and maintenance activities or obstructions in the roadway
A
Flashing Lamps
13
Q
Roadwork devices consisting of precast concrete sections, sandbag and others which may be used to guide traffic at the construction site
A
Temporary Curbing
14
Q
Device used in place of rigid cones with a minimum of 450 mm by 50 mm wide with alternate bands of contrasting color as seen by approaching traffic for delineation of traffic.
A
Bollard
15
Q
Means any traffic control device marked on the surface of the carriageway used to regulate traffic or to warn or guide road users
A
Road Markers
16
Q
Regulatory Signs
Additional Information (height limit, speed limit)
A
Circle Signs
17
Q
Give Way
Warning Signs
A
Equilateral Triangle Signs
18
Q
Directional signs
Roadwork signs
Special purposes signs
Facility Information Signs
Instruction Signs
Guide Signs
Point of Interest Signs
A
Rectangle Signs
19
Q
Stop signs
A
Octagon Signs
20
Q
Pedestrian and school crossing signs
A
Pentagon Signs
21
Q
No. of vehicles per unit distance, occupying a section of roadway at a given instant time
A
Density
22
Q
The actual number of vehicles observed to pass a given point on the highway at a given time
A
Volume (more accurate than Density)
23
Q
Rate at which vehicles pass a fixed point (veh/hour)
A
Flow
24
Q
The maximum sustained 15-minute rate of flow, expressed in passenger cars per hour per lane, which can be accommodated by a uniform freeway segment under prevailing traffic and road conditions in one direction
A
Capacity
25
No. of vehicle moving in a specified direction on a given lane or roadway that pass a given point during specified unit time.
Traffic Volume
26
Maximum number of vehicles, which have a reasonable expectation of passing over a given section of a lane or a roadway in one direction or in both directions during one hour under prevailing road and traffic conditions.
Road Capacity
27
Ability of a roadway to accommodate traffic volume
Max no. of vehicles in a lane or a road that can pass a given point in unit time,
Traffic Capacity
28
Max no, of passenger that can pass a given point a lane or roadway during one are under the most ideal roadway and traffic conditions, which can possibly be attained
Basic Capacity
29
Max no. of cars that can pass a point during one hour under prevailing roadway & traffic conditions
Possible Capacity
30
Max no. of cars in one hour without traffic density being so great to cause any delay or hazard to the driver
Practical Capacity
31
Vehicle’s instantaneous speed at a specified location
Spot Speed
32
Vehicle’s average speed over a length of roadway at any time
Harmonic mean of speeds passing a point during a period of time;
Space Mean Speed
33
Average of spot speeds of all vehicles passing a point in a highway
Average Speed
34
Speed distribution of vehicles at a point on a roadway
Average of instantaneous speeds of observed vehicles at the spot
Time Mean Speed
35
allow slower travel for large vehicles such as large trucks or semi-trailer trucks, ascending a steep grade.
Climbing Lanes
36
the part of the main road that is used for passing other vehicles and is nearest the center of the road.
Overtaking Lane or Passing Lane
37
used to separate adjacent lines of traffic moving in the same direction.
Lane line
38
is expressed as a K value, which is the length of the vertical curve in meters for 1% change in grade
Vertical Curve
39
Messages are ____ in color.
White
40
Letters or numerals used on roads in urban areas shall be at least ____. On high speed highways, they must be at least ____.
2.5 m ; 5 m
41
Vertical distance or difference in elevation of contour lines
Contour Interval
42
Reaction time used for road safety.
2.5 seconds
43
Ideal capacity of a road
2000 veh/hr
44
Parabolas centered about the point of intersection of the vertical tangents they join
Vertical Curve
45
Primary consideration in the design of geometric cross section of highways, runways and taxiways
Drainage
46
Commonly identified as primary, secondary, and working control on the jobsite
Horizontal Control
47
Rule ____ is the guidelines regarding Personal Protective Equipment (PPE).
Rule 1080
48
Pavement markings shall only be applied or removed by this agency
DPWH
49
Based on the expression on the technical resolution of international water way congress, about how many percent of tide is guaranteed safe for the ships?
98 %
50
The difference between the actual travel time and a given segment of a transportation system and some ideal travel time for that given segment
Delay
51
Messages when painted on pavement should be limited to how many words only?
Three words or less
52
Written instructions detailing how the facility is to be constructed
Specifications
53
Pavement and Curb Markings
those laid in the direction of travel (center line, lane line, double yellow line, etc.)
Longitudinal Lines
54
Pavement and Curb Markings
those laid across the direction of travel (stop line, give way line, pedestrian crossing markings, etc.)
Transverse Lines
55
Pavement and Curb Markings
turn lines, parking bays, painted median islands, and Bus & PUJ Lane Lines
Other Lines
56
Pavement and Curb Markings
approach markings to islands and obstructions, markings on entrance and exit ramps, approach to railroad crossing, messages and symbols, and pavement arrows
Other Markings
57
Made to establish the horizontal and vertical positions of arbitrary points.
Control Survey
58
Made to determine the length and direction of land lines and to establish the position of these lines on the ground.
Boundary Survey
59
Made to gather data to produce a topographic map showing the configuration of the terrain and the location of natural and man-made objects.
Topographic Survey
60
The survey of bodies of water made for the purpose of navigation, water supply, or sub-aqueous construction.
Hydrographic Survey
61
Made to control, locate and map underground and surface works related to mining operations.
Mining Survey
62
Made to lay out, locate and monitor public and private engineering works
Construction Survey
63
Refers to those control, topographic, and construction surveys necessary for the location and construction of highways, railroads, canals, transmission lines, and pipelines.
Route Survey
64
Made to utilize the principles of aerial photogrammetry, in which measurements made on photographs are used to determine the positions of photographed objects
Photogrammetric Survey
65
generally involves imaging or “mapping” of regions of the sky using telescopes
Astronomical survey
66
the correction to be applied to the latitude or departure of any course is to the +total correction in latitude or departure as the length/distance of the course is to the length/perimeter of the traverse.
Compass Rule (Bowditch Rule)
67
the correction to be applied to the latitude or departure of any course is to the total correction in latitude or departure as the latitude or departure of that course is to the arithmetical sum of all the latitude or departure in the traverse without regards to sign.
Transit Rule
68
Any structure built into the sea but not parallel to the coastline and includes any stage, stair, landing place, or other works connected therewith
Pier
69
A place where ships may anchor or tie up for the purpose of shelter, repair, loading or discharge of cargo, or for other such purposes
Port
70
A tower, building, or other type of structure designed to emit light from a system of lamps and lenses, and to serve as a navigational aid for maritime pilots at sea or inland waterways
Lighthouse
71
A continuous structure built parallel to or along the margin of the sea or alongside riverbanks, canals, or waterways where vessels may lie alongside to receive or discharge cargo, embark or disembark passengers, or lie at rest
Wharf
72
a navigable deep channel leading through a harbor or along a shoreline
Fairway or Waterway
73
a natural submerged ridge, bank, or bar that consists of, or is covered by, sand or other unconsolidated material, and rises from the bed of a body of water to near the surface
Shoal
74
a strait or narrow sea between two close landmasses
Channel
75
The average height of the sea for all stages of the tide obtained from systematic observations of sea levels at equal intervals over a long period of time along a given coastline.
Mean Sea Level
76
Datum line for design of port facilities in accordance with charts which is being used by Philippine Ports Authority.
Mean Lower Low Water (MLLW)
77
Water level that guarantees about water depth for safety of the ships berthing on a certain ports and harbor below the MLLW should be?
0.15 – 0.40 m
78
Ratio of wave height to its wavelength
Steepness
79
The pressure against a vertical wall due to waves.
Clapotis
80
The distance that the wind blows over the sea in generating the waves is known as:
Fetch
81
Waves formed by moving ship or boats are called:
Wakes
82
Waves under the influence of winds or storms which occur outside area of observation
Swells
83
A very long-standing wave on a large but limited body of water generally occurring when a storm dies down after producing a wind tide
Seiche
84
An instrument use to measure the intensity of wind.
Beufort’s Scale
85
A wave at a point where the depth is equal to ½ of the wavelength or greater to be expressed in terms of the parameters of significant wave.
Deep Water Waves
86
Waves which occur in water having a depth less than one half of the wavelength and the
influence of the bottom changes the form or orbital motion from circular to elliptical or near elliptical.
Shallow Water Waves
87
A hypothetical wave having a wave height and period equal to average values of the wave height and period of the largest 1/3 of all waves in the train as counted in the order of greater wave height.
Significant Waves
88
A maximum wave height and wave period of the maximum wave height in the wave train.
Highest Wave
89
Waves which fall forward since the forward velocity of the crest particles exceeds the velocity of propagation of the wavelength L is less than 7 times the wave height (L < 7H)
Breaking waves
90
Waves are formed by the frictional drag of wind across the water surface, this is a process of transferring energy from wind to water
Gravity Waves
91
The regular periodic rise and fall of the surface of the seas, observable along their shores,
Tide
92
When the lines connecting the earth with the sun and the moon form a right angle, that is the moon is in its quarters, then the actions of the moon and sun are subtractive, and the lowest tides of the month occur, this is called:
Neap Tides
93
Known as falling tides
Ebb Tides
94
In many parts of the world, the high waters reach their greatest height and the low waters at the least height, soon after the time of full moon and new moon. These tides are called:
Spring Tides
95
Tides which occur only one high tide a day is called:
Diurnal tide
96
The periodic rise and fall of sea level in response to the gravitational attraction of the sun and moon as modified by the earth’s rotation.
Astronomical Tide
97
Owing to retardation of the tidal wave in the ocean by frictional force, as the earth revolves daily around its axis and as the tide tends to follow the direction of the moon, the highest tide for each location is not coincident with conjunction and opposition but occurs at some constant time after new and full moon. This interval which may amount to as much as two and a half days is known as;
Age of the Tides
98
Layer of pavement which finally carries the load from the road
Sub-grade
99
Part of road structure which is immediately above the sub-grade and composed of stone boulders or superior soil
Sub-base
100
Component of the road structure which receives the traffic load and transfer it to the sub-grade.
The top surface of a road structure.
Base
101
One or more layers of crushed aggregate, which are bonded by bituminous materials and a seal coat laid on top is called:
Surface dressing
102
A 20mm thick premix bitumen layer over which is laid a seal coat
Water Bound Macadam
103
A layer consisting of properly designed mix of course aggregate, fine aggregate, a filler and a bituminous binder:
asphaltic concrete
104
The layer in a road pavement which provides resistance to wear and tear due to traffic
wearing course
105
The layered structure placed over a soil sub-grade for forming road.
Pavement
106
A mixture of bitumen, fine aggregate and filler in suitable proportion heated to about 200°C in special cookers and laid is called
Mastic Asphalt
107
An application of hot bitumen material given to the old surface to provide adhesion to the old and new surface
Tack Coat
108
A layer of stone chipping coat laid over a hot bitumen to make the surface water-proof
Prime Coat
109
A very thin surface applied over a bituminous pavement to make it impervious.
Seal Coat
110
The process of moving soil or rock from one location to another and processing it so that it meets construction requirements of location, elevation, density, and moisture content
Earthmoving
111
Ability of a soil to support the weight of vehicles under repeated traffic
Trafficability
112
Measure of the difficulty in excavating and loading of soil
Loadability
113
Star-shaped figures
Polygram
114
Sum of Two Angles = 360
Conjugate Angles
Explementary
115
For any cyclic quadrilateral, the product of the diagonals equals the sum of the products of the opposite sides
Ptolemy’s Theorem
116
Curves that intersect each curve of the family perpendicularly
Orthogonal
117
A set of points together with line segments joining the points in pairs
Graph/Network
118
A point is a node if there is at least one path (line) starting from it or reaching it. Nodes are named by capital letters of English alphabet.
Nodes in a graph
119
The line segment (path) joining two nodes is an arc
Arcs in a graph
120
Line segment joining any two non-adjacent vertices
Diagonal
121
Distance between two parallel sides of a quadrilateral
Altitude
122
An area bounded by arcs (including outside) is called a region
Region
123
This should always be shown on site plans for orientation purposes. Displaying it prominently is the standard practice
North direction
124
Line intersecting the curve in at least 2 points
Secant Line
125
A line that passes through the centroid, orthocenter, and circumcenter of a triangle
(Dist.CENTROID TO ORTHOCENTER = 2x Dist.CENTROID TO CIRCUMCENTER)
Euler’s Line
126
Richter Scale (based on intensity)
R = log(I/Io)
127
Amount which a willing buyer will pay to a willing seller for the property where each has equal advantage and is under no compulsion to buy and sell.
Market Value
128
A subjective assessment of the expected return on an investment at a given risk
Utility Value
129
Asset’s worth when it is deemed no longer usable
Junk Value (Salvage, Scrap, Residual, Break-Up Value)
130
It is anything that can cause harm
Hazard
131
It is the probability of harm actually being done
Risk
132
It is a violation of an accepted safe procedure which could permit the occurrence of an accident.
Unsafe Act
133
A hazardous physical condition or circumstance which could directly permit the occurrence of an accident.
Circumstances or deviation from standard condition which could permit an occurrence of accident or incident.
Unsafe Condition
134
Refers to the physical or environmental conditions of work or employment, which substantially comply with the provisions of this standard.
Safety
134
It is the recognition and control of hazards in the workplace
Occupational Safety and Health
135
Looking at the possibility of injury or harm occurring to a person if exposed to a hazard.
Risk assessment
136
Recognizing of things which may cause injury or harm to a person.
Hazard Identification
137
Introduction of measures which will eliminate or reduce the risk of a person being exposed to a hazard.
Risk Control
138
Worst condition which should be considered in coastal engineering
Unusually high sea level with severe wave action
139
Single most important environmental factor in the broad field of coastal engineering
Coastal erosion
140
Probability of a mechanism that will function satisfactorily. If the mechanism is to operate intermittently and briefly, it also refers to performance on a given occasion. If the mechanism is to operate continuously, it refers to its performance for a specific period of time.
Reliability
141
Speed limit appropriate on lower standard expressways.
80 or 90 kph
