Just like in the natural world, gravity warps and compresses time, density and travel speed compress the distance in cities.

Accessibility measures this density, or urban gravity, and supports city design and constructs that are multimodal and inherently more compact, connected and sustainable. 

As accessibility increases, so do opportunities to reach places quickly and efficiently across various modes of transportation.  

Accessibility encourages scientific measures and a synergy between land use and transportation, and enables information and decision points to be communicated simply and effectively information.