Editing Permeable paving (section)

=== Single-sized aggregate ===
'''Single-sized aggregate''' without any binder, e.g. loose gravel, stone-chippings, is another alternative. Although it can only be safely used in walkways and very low-speed, low-traffic settings, e.g. car-parks and drives, its potential cumulative area is great.{{citation needed|date=September 2012}}