_________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 to facilitate smooth transitions between major roads and reduce the need for traffic signals. This type of interchange consists of loop ramps that allow vehicles to merge from one road to another without stopping, minimizing delays and improving traffic flow.
In a cloverleaf interchange, the main roads are typically connected by four curved ramps that resemble a cloverleaf shape. The ramps form a system of four different entry and exit points, which help direct traffic in and out of the interchange smoothly. By using multiple lanes on these ramps, the interchange accommodates higher volumes of traffic, allowing vehicles to move through the intersection more efficiently compared to a traditional intersection with signals.
In contrast, a diamond interchange is designed to provide simpler access to and from a highway. It typically features a single ramp in each direction for entering or exiting the highway, often forming a “diamond” shape when viewed from above. The diamond interchange is more suitable for lower traffic volumes and does not rely on multiple lanes for the ramps.
A trumpet interchange is often used when a road leads to a dead-end at a highway. It gets its name from the shape of the roadways which resemble a trumpet. While it may have a single lane or multiple lanes, the structure is less focused on providing high-capacity traffic flow compared to a cloverleaf.
Overall, cloverleaf interchanges are the most suitable for handling large volumes of traffic, which is why they often feature multiple lanes on the ramps to ensure smooth and efficient travel.