Gravel being added to a grid system - Paul Maguire/Shutterstock Gravel grid systems comprise a network of interlocking plastic modules that hold the surface layer of gravel on top of a base layer.

Gravel grid systems are meant to stabilize gravel on driveways and minimize maintenance. Do you need them? We're not sure, but you can find out for yourself.

Gravel grid systems enhance stability but also add to project costs and installation complexity. Find out if installing a gravel grid system is worth it.