|Image a screen capture from Google Maps.|
The sawtooth configuration allows the truck to pull past their assigned space and back into it with very little maneuvering. The real estate requirements are significantly lower than for the traditional system. The dispersed system spreads out the exterior traffic and probably increases the visibility of dock workers while minimizing their exposure to traffic.
The downsides of the sawtooth configuration are that building construction is more complicated and that the docks are more dispersed. In some cases, dispersed loading docks are advantageous because it reduces in-plant shipping and mobile equipment traffic.