________are designed with a secondary multiple lane roadway.
a) Cloverleaf interchange
b) Diamond interchange
c) Trumpet interchange
d) All of the above
The correct answer and explanation is:
The correct answer is: a) Cloverleaf interchange
A cloverleaf interchange is designed with a secondary multiple lane roadway. This type of interchange is commonly used when two highways or major roads intersect and are designed to handle high volumes of traffic efficiently. The design includes loop ramps that allow vehicles to turn in different directions without the need for traffic signals or stop signs, which significantly reduces traffic congestion.
The cloverleaf interchange typically consists of four ramps that form a loop shape, which helps to direct traffic in all four directions. The multiple-lane roadways on these ramps allow for smoother traffic flow and are built to handle high traffic volumes. This layout reduces the chances of bottlenecks and delays, especially in areas with heavy traffic.
In addition, the multiple lanes on the ramps help to separate vehicles traveling in different directions. This minimizes the risk of collisions and provides enough space for vehicles to merge safely. As a result, cloverleaf interchanges are often used in high-traffic urban areas or on highways that require a smooth flow of traffic between different routes.
While the cloverleaf interchange is a popular choice, other types of interchanges like the diamond and trumpet interchange may also use multiple lanes but in different configurations. The diamond interchange typically involves a single lane road with a simple crossroad design, while the trumpet interchange is often used when a secondary road terminates at a primary road in a way that is more constrained than a cloverleaf.
Overall, the cloverleaf interchange is specifically designed to accommodate the demands of high-traffic environments and provide efficient traffic flow through the use of multiple lane roadways.