Answer: B. Interchanges
Interchanges are intersection of two roads that has great help to motorist for it allows cars to enter and leave the road, where one road can be used for exiting and the other is for entering freeway.
However, these interchanges requires cooperation and communication between drivers especially those cars exiting have the right-of-way unless there is a safety threat.
Moreover, there are different kinds of interchanges such as cloverleaf interchange that allows for interchange of two freeways with minimal interruption of speed or movement. Next, diamond interchange permit exchange of a major roadway with a secondary dual or multi-lane roadway. Then, the trumpet interchange allows for interchange of secondary two-way streets to a multi-lane roadway. Lastly, frontage road interchanges allow for interchange of vehicles using parallel secondary two-way or one-way roadways and a major multi-lane roadway.
