What is the name of the road configuration where a side road forms a T-intersection with an expressway?

• A. Cloverleaf interchange
• B. Diamond interchange
• C. Trumpet interchange
• D. Partial interchange

Answer: (C)

A trumpet interchange is used when a smaller side road ends at an expressway and connects via a short ramp system, creating a noticeable T-like junction. The ramps curve and loop to merge with the expressway, giving that trumpet-shaped silhouette. This design lets traffic from the side road access the expressway safely without an at-grade crossing, which would be risky at high speeds. The other interchange types describe different configurations: a diamond keeps the side road crossing with direct ramps on both sides while the road continues; a cloverleaf uses looping ramps for all directional moves; a partial interchange omits some movements. So, the scenario described best fits a trumpet interchange.