Under how many kilometers per hour should the direction indicator be exempted for stackers without a driver's seat?

In the context of stackers without a driver's seat, regulations typically exempt these types of equipment from requiring direction indicators if they are operated at lower speeds. The exemption threshold is set at 20 kilometers per hour. This standard is based on the understanding that stackers, often used in warehouses and tight workspaces, are unlikely to reach high speeds, thus reducing the need for additional safety features like direction indicators when operating under this speed.

The rationale behind this limit is safety; at higher speeds, the risk associated with the lack of direction indicators increases, as operators and nearby workers may not be aware of the stacker's intent to change direction. By establishing this specific speed exemption, regulations aim to ensure that safety features align with the operational environment and speed limits appropriate for the equipment type.