<span>Barricades, vertical panels, drums, and cones in construction zones are known as channelizing devices. They a</span>re used in construction and maintenance work areas <span> to notify drivers or passengers of unusual or potentially dangerous conditions in or near work areas.
</span>A barricade is a portable or fixed device having from one to three rails with appropriate markings. It is used to control traffic by closing, restricting, or delineating all or a portion of the right-of-way.<span>Drums are most commonly used to channelize or delineate traffic flow but may also be used singly or in groups to mark specific locations.</span>
Answer:
Multiple devices can be connected
Answer: I believe it’s D.
Explanation: Less developed countries may not be able to afford the new technology, while more developed ones will be able to do so. Meaning the less developed countries will most likely not change.

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<h2><u>Hope</u><u> </u><u>it</u><u> </u><u>helps</u><u>.</u><u>.</u><u>♪</u></h2>
NoSQL is primarily designed for supporting the decision making systems. Most NoSQL data stores were created to address problems associated with storing large amounts of distributed data in relational database management systems(RDBMS).
RDBMS is system used for the management of the database.D<span>ata is stored in the form of related tables.</span>