How does a local controller authorize another aircraft to cross an active runway?

The phrase "Cross (runway) at (point/intersection)" is the standard phraseology used by local controllers to authorize an aircraft to cross an active runway. This command is concise and direct, clearly instructing the pilot where to cross without ambiguity. It provides the necessary information that the aircraft is cleared to conduct the crossing while ensuring situational awareness of the runway's active status.

Using this phrase ensures that the pilot understands they have received permission to cross and that they should proceed to the specified point. It is crucial for maintaining safety and coordination on the airport surface, particularly in busy air traffic environments.

Other phrases might not carry the same clarity or direct authorization for crossing. For instance, "Proceed to (point/intersection)" could imply movement toward a location without specifically authorizing runway crossing, which might confuse pilots about their approved actions regarding runway traffic. Similarly, phrases like "Clear for cross (runway) at (point/intersection)" and "Authorize crossing (runway) at (point/intersection)" may introduce unnecessary complexity or redundancy in communication, deviating from the established phraseology that prioritizes brevity and clarity.