Which of the following statements is true regarding NLETS transactions for commercial trucks crossing the Mexican border?

The statement that registration information can be obtained by sending an NLETS transaction to "MX" is accurate. This is because NLETS (National Law Enforcement Telecommunications System) facilitates information sharing between U.S. law enforcement agencies and allows queries to be made regarding vehicles, including commercial trucks, that are crossing into or out of Mexico. By sending a transaction to "MX," users can retrieve relevant registration information pertaining to those commercial trucks, promoting better enforcement and regulatory practices at the border.

In the context of the other options, not all of them offer accurate information about TLETS transactions. Therefore, understanding the framework under which NLETS operates and its ability to connect with Mexican counterparts is crucial for anyone engaged in law enforcement or regulatory activities near the border. This highlights the importance of international collaboration and information sharing in addressing issues such as border security and commercial vehicle regulation.