Cal. Code Regs. tit. 8, § 3083 – Automatic Transfer Devices.

(a) Where used in nonrestricted areas, the automatic transfer device shall be so designed that the kinetic energy of the load during the discharge shall not exceed 30 foot-pounds and the speed shall not exceed ¹¹/₂ feet per second. When the transfer device is mounted on the car, the load shall be capable of being stopped by a force of 100 pounds. The transfer device shall stop the load at the completion of a discharge operation. A flashing light or a gong shall be actuated on the start of door opening prior to transfer.
(b) Where the transfer of load is in a nonrestricted area, there shall be a clearance of not less than 4 feet between the end of the transferred load and any fixed obstruction in line with the end of the load.
Exception: A clearance of not less than 2 feet will be allowed where the system is arranged to prevent the automatic transfer of more than one load into the area.
(c) In nonrestricted areas, discharge shall not take place unless the area is clear or a protective device or suitable guarding is provided. Guarding means shall be:
1. (1) Railings or suitable barriers to prevent persons from entering the path of transfer accidentally or colliding with a discharging load, or
2. (2) Mechanical or electrical devices designed to prevent or stop transfer if a person or object is in the path of the transferring load, or
3. (3) When transfer load is on a table or section raised not less than 18 inches above the floor, and load does not overhang the table or raised section and the distance between car platform sill and the nearest edge of table does not exceed 6 inches.