Which standard hand signal indicates "Travel (one track)"?

The standard hand signal that indicates "Travel (one track)" is indeed the correct choice. In signaling for crane operations, specific gestures are used to convey precise instructions to operators. The signal for "Travel (one track)" is designed to instruct the crane to move in a linear path along a single track. This is essential for tasks that require careful maneuvering in a confined space or along a designated route.

Understanding the importance of clear communication in rigging operations is critical, as proper signaling can enhance safety and efficiency on site. For instance, other hand signals for traveling may indicate different types of movements, such as "Travel (both tracks)," which would suggest a need for wider travel across both tracks. Each signal is distinct, ensuring that the operator can respond appropriately based on the specific task at hand.