Is it permissible for one RCO to link up both Remote Control Trains (RCTs)?

The correct response highlights the necessity of performing an attachment test when linking up both Remote Control Trains (RCTs). This requirement is rooted in safety protocols and operational standards established for RCOs. An attachment test ensures that the connection between the RCTs is secure and functioning properly, which is crucial to prevent accidents or operational failures during their use. Performing this test reinforces the importance of safety and confirms the compatibility of the two units being linked.

While there may be some contexts where linking trains might not be strictly prohibited, without the confirmation that the connection is safe and effective through an attachment test, it poses undue risks. Therefore, adhering to the policy of conducting an attachment test not only maximizes safety but also assures that the RCTs operate harmoniously together.