"Today's tall trucks require extended hoppers!"
These are the best all-around sweepers for heavy debris. These machines sweep the ground and mechanically carry the material to an on-board hopper.
Regenerative air vacuum machines:
These carry the material to a hopper by means of an air stream. These machines use the same air over and over again.
Regenerative air machines differ from parking lot sweepers in that they re-use air to lift debris into the hopper rather than exhausting dirty air into the atmosphere.