Surveying and Road Safety Quiz

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Questions and Answers

Which option is the most effective in avoiding bias in surveying?

Selecting a sampling method giving equal chance to all combinations (correct)

Sending out a large number of surveys regardless of response rate

Ensuring every individual in the population responds

Choosing individuals based on representative characteristics

What consideration is essential for the use of safety barriers?

Back slope steepness only

Unforgiving hazards only

Water hazards only

All specified factors (correct)

How many words should messages painted on pavement ideally contain?

Five words or less (correct)

Three words or less

Six words or less

Four words or less

Which types of markings are included in pavement and curb markings?

Longitudinal, transverse, lane, and center lines Signup and view all the answers

What factors should be considered in the design of overtaking and climbing lanes?

Initial diverge taper, auxiliary lane length, and end taper Signup and view all the answers

What term describes a structure built alongside water for docking vessels?

Wharf Signup and view all the answers

What does the measurement of vehicle density on a roadway refer to?

The number of vehicles over a distance at a specific time Signup and view all the answers

Which factors should be considered when selecting the minimum K value for vertical sag?

Sight distance, appearance, and riding comfort Signup and view all the answers

At what water depth can a wave be expressed in terms of the parameters of significant wave?

When it is equal to one-half of the wavelength or greater Signup and view all the answers

What type of thermoplastic lane marking provides visual, audio, and motion warnings to motorists?

Rumble strip Signup and view all the answers

In which of the following scenarios must lane lines not be continued?

Across signalized intersections Signup and view all the answers

What is the purpose of guide signs?

To inform and advise road users of directions and services Signup and view all the answers

What benefits does shoulder paving provide?

Offers additional safety and pavement integrity Signup and view all the answers

Which combination of cases indicates where lane lines can be continued?

Considered with specific restrictions in each case Signup and view all the answers

Which of the following groups of benefits of shoulder paving is correct?

Integrity of pavement, width for markings, and low maintenance costs Signup and view all the answers

Which structures are considered built into the sea but not parallel to the coastline?

Pier Signup and view all the answers

What is the term for a body of water with navigable depth leading to a harbour?

Channel Signup and view all the answers

How can a lost boy scout determine south using a watch on a cloudless day?

Align the hour hand with the sun’s azimuth, and south will be the midway between the hour hand and 9. Signup and view all the answers

Which of the following should always be shown on site plans for orientation purposes?

North direction Signup and view all the answers

What is the correct sequence of procedures for calculating azimuths clockwise?

I, II, III, & IV Signup and view all the answers

Which statements regarding geometric relationships are true?

All of the above Signup and view all the answers

What is the curvature at the center of the circle that subtends the arc between the PC and the PT called?

Central angle Signup and view all the answers

The curves that are normally parabolas centered about the point of intersection of the vertical tangents they join are known as what?

Parabolic curves Signup and view all the answers

Which statements about triangles are correct? I. If two sides of a triangle are congruent, the angles opposite these sides are congruent. II. If two angles of a triangle are congruent, the sides opposite these angles are congruent. III. An equilateral triangle is equiangular. IV. An equiangular triangle is equilateral.

All of the above Signup and view all the answers

Which of the following statements about curves is true? I. All histograms are single peaked. II. All bell-shaped curves are normal curves and symmetrical. III. All normal curves are bell shaped and symmetrical.

III only Signup and view all the answers

What are the geometric relationships that should be understood for operating an instrument like a theodolite? I. The vertical axis should be perpendicular to the axis of the plate levels. II. The vertical crosshair should lie in a plane perpendicular to the horizontal axis. III. The line of sight should be perpendicular to the horizontal axis. IV. The horizontal axis should be perpendicular to the vertical axis. V. The axis of the telescope should be perpendicular to the line of sight.

I, II, IV and V only Signup and view all the answers

Which components make up the stopping sight distance?

Reaction Distance and Braking Distance Signup and view all the answers

What is the primary consideration in the design of geometric cross-sections of highways, runways, and taxiways?

shoulder Signup and view all the answers

What term is defined as the maximum number of vehicles, passengers, or pedestrians that can be accommodated by a facility under a specific level of service?

capacity Signup and view all the answers

Which factors are considered when identifying primary, secondary, and working control on a job site?

Surveying and construction reference Signup and view all the answers

Which statement regarding the relationships within a triangle is correct?

An isosceles triangle must have one angle that is obtuse. Signup and view all the answers

Study Notes

Surveying

Bias in Surveying: Key to avoiding bias is using a sampling method where every combination of individuals has an equal chance of being selected. This ensures that the sample accurately reflects the population.

Road Safety

Safety Barriers Use: Use safety barriers if hazards like steep slopes, unforgiving obstacles, or water hazards are present within the road's clear zone.
Pavement Messages: Pavement messages should be concise, limited to four words or less for optimal readability and driver comprehension.

Road Markings

Pavement Markings: Four main types of pavement markings: Longitudinal lines, transverse lines, stop lines, and center lines.
Overtaking and Climbing Lanes: Design considerations include the initial diverge taper, auxiliary lane length, and end or merge taper.

Traffic Flow

Traffic Density: Traffic density is measured by the number of vehicles present on a road segment at a given moment, typically expressed as vehicles per mile or per kilometer.

Maritime Infrastructure

Wharf: A continuous structure alongside a waterway allowing ships to dock for loading, unloading, or resting.
Pier: A structure extending into the sea from the shore, used for similar purposes as a wharf.
Port: A body of water with navigable depth providing access to a harbor.
Channel: A navigable waterway leading to a harbor.

Road Design

Vertical Curves: These curves are typically parabolic, connecting vertical tangents.
Shoulder Paving: It provides structural integrity to the pavement, width for edge line markings, safety by preventing vehicles from skidding, and lower maintenance costs compared to unpaved shoulders.

Determining South with a Clock: Align the hour hand of a watch with the sun, and south will be located halfway between the hour hand and the number 12.
Site Plans: North direction, legends and symbols, scale, and a vicinity map are crucial components of a site plan, aiding orientation and understanding.

Road Geometry

Azimuths: Azimuths are calculated clockwise. Steps involve planning, performing the calculation, checking the calculation, and calculating azimuths for both clockwise and counterclockwise traverses.
Geometric Relationships: There are specific relationships applicable to instruments used in surveying, such as the perpendicularity of the vertical axis to the plate level axis, and the perpendicularity of the line of sight to the horizontal axis.
Stopping Sight Distance: Stopping sight distance comprises two components: reaction distance and braking distance.

Highway Design

Geometric Cross-section: Drainage, shoulders, and railways are fundamental elements considered in the design of highway cross-sections, runways, and taxiways.

Traffic Engineering

Capacity: The maximum number of vehicles, passengers, or pedestrians that a facility can handle at a given service level.

Construction Management

Work Control: There are typically three levels of control in construction: primary, secondary, and working control.

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Description

Test your knowledge on surveying methods, road safety protocols, road markings, and traffic flow management. This quiz covers key concepts including bias in surveying, the use of safety barriers, and types of pavement markings. Perfect for students or professionals in civil engineering or transport management.