Road Signs and Soil Mechanics Quiz

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What is the standard geometric shape for a stop sign?

Octagon

What is the purpose of thermoplastic lane marking design?

To aid and provide motorists with visual, audio, and motion warnings on the road.

What is the process used to produce a well-graded mixture without excessive fines suitable for compaction?

Consolidation

What is the purpose of a rumble strip?

To provide warning to drivers on the road. Signup and view all the answers

What is a type of structural support method that transfers loads to a deeper layer of soil or rock?

Pile Signup and view all the answers

What term is used to describe the difference between the actual travel time and ideal travel time of a transportation segment?

Delay Signup and view all the answers

What type of signs inform road users of traffic laws and regulations that, if disregarded, will constitute an offense?

Regulatory signs Signup and view all the answers

What is the purpose of a single application of bitumen material to the old surface?

To provide adhesion to the old and new surface Signup and view all the answers

What is the primary purpose of compaction in road construction?

Add resistance due to tire flexing and penetration for the travel surface Signup and view all the answers

What type of joint is provided wherever concrete cement pavement work is suspended?

Construction joint Signup and view all the answers

What is the process of moving soil from one location to another and processing it to meet construction requirements?

Earth moving Signup and view all the answers

What is the purpose of a layer of stone chippings coat laid over a hot surface to make it waterproof?

To make the surface waterproof Signup and view all the answers

What is super elevation and how does it aid in preventing road run-offs?

Super elevation is the banking of a horizontal road surface, usually a curve, to improve drainage and vehicle stability. It aids in preventing road run-offs by counteracting the lateral centrifugal force of vehicles traveling around the curve. Signup and view all the answers

Which compaction techniques are commonly used in road construction and why are they important?

Common compaction techniques used in road construction include vibration, kneading, and impact loading to force air out of soil void spaces, resulting in a denser material. Compaction techniques are important to provide structural support and resistance to wear and tear due to traffic. Signup and view all the answers

Compare and contrast prime coat and tack coat, and explain their importance in road construction.

Prime coats are applied to prevent water from seeping into the soil beneath the pavement, while tack coats ensure proper bonding between bituminous layers. Both are important in road construction to ensure the durability and longevity of the final pavement surface. Signup and view all the answers

What are preferred measures of central tendency and variability in the presence of suspect outliers in a data set?

In the presence of suspect outliers, preferred measures of central tendency include the median or mode, while measures of variability might include the interquartile range (IQR) or median absolute deviation (MAD) to minimize the influence of such outliers. Signup and view all the answers

What are alligator cracks and what causes them in an asphalt concrete surface?

Alligator cracks are a series of interconnected or interlaced cracks caused by fatigue failure of the asphalt concrete surface under repeated traffic loading. They are often the result of inadequate thickness, weak or poorly compacted base, and improper mix design. Signup and view all the answers

Identify factors that contribute to loss of control on curves and explain how the provision of safety site distance can help mitigate these situations.

Factors that contribute to loss of control on curves include driver alertness, recognition of hazards, and available actions to stop or change direction. The provision of safety site distance allows drivers more time to react, thus mitigating potential risks associated with these factors. Signup and view all the answers