Great observation—you are absolutely right that some street benches have a slight tilt, and yes, our urban benches are designed with a subtle forward or sideways slope for exactly that reason: to drain rainwater. Not every model we make has a visible tilt, but many of our standard outdoor benches include a 1 to 3 degree incline across the seat surface or along the length. This small angle is enough to let water run off instead of pooling in the middle or soaking into joints.
The tilt is never so steep that it feels uncomfortable to sit on. In fact, most people do not notice it until someone points it out or until they see a puddle-free bench after a downpour. We typically slope the seat toward the front edge or toward one end, depending on the frame design and where we have placed drainage gaps. The goal is simple: keep the sitting area dry, reduce standing water that can cause rust or rot in metal and timber components, and prevent slippery algae or moss from forming.
Some benches combine the tilt with small grooves or slots in the seat slats so water has a clear path to escape. Others use a slightly convex top surface, which creates a natural crown so water runs to both sides. The tilt also helps dried leaves and debris slide off more easily, which cuts down on maintenance.
So yes—if you spot a street bench with a subtle slope, it is most likely intentional. It is one of those small design details that makes public seating last longer and stay more pleasant to use, especially in rainy climates.