Abstract
The disclosure relates to a wireless server unit (30) for use in a warehouse (1), wherein the wireless server unit is configured to; receive a vehicle signal (101) from a material handling vehicle (10), said vehicle signal indicating a current or a desired position of the vehicle relative to at least one aisle (20), process the vehicle signal (101) to generate an aisle status data (301) based on the vehicle signal (101), transmit the aisle status data (301) to the at least one material handling vehicle (10), wherein the aisle status data (301) indicate whether the material handling vehicle is granted or declined access to enter the aisle (20). The disclosure further relates to a material handling vehicle (10) for communicating with a wireless server unit (30) and a remote aisle access system for controlling access to material handling vehicles in a warehouse.