Omnitangle

Omnitangle: A streetcar track plan arranged in a ladder-like configuration.

Usage: The planning commission thought the grid of streets in the downtown core lent themselves well to an omnitangle track configuration.

Source: Omnitangle is a crude, misinformed portmanteau of omnivagant and rectangle. Arguments could be made for the more Latinly, but anatomically sounding, 'omnirectus', or its relative, the mathematically inclined 'omnirectangulum', but the odd slice of 'tangle' in omnitangle captures the essence of layouts based on these plans usually being on the verge of becoming a tangled mass of spaghetti.  

Omnitangle is a specific form of omnivagancy where the track plan geometry is restricted to a narrow set of ladder-like rectangular forms.

from the electronic files for the 2029 4th edition of The Dictionary of Non-Existent Model Railroad Terms.