Asphalt or concrete parking surfaces are the best option for people who rely on support (wheelchairs, canes, etc) for mobility, and are less likely to cause someone to trip, as they are generally smooth and even. Maintain them well to increase visual appeal while ensuring that they’re easy to navigate. Cracks, gaps, or bumps can make balance difficult to maintain and are a safety hazard for anyone using mobility devices. Anything with wheels – strollers, luggage, etc – will be easier to use if smooth surfaces are present.
Exception:
If brick, cobblestone, or hard-packed gravel surfaces are used, they need to be level and free from gaps and bumps. Weather and traffic from vehicles can cause these surfaces to become extremely uneven over time, creating unnecessary hazards that can then cause people to trip and/or fall. Sometimes the slightest bump (even a half inch) can cause a wheel or foot to get caught and throw off someone’s balance.