What are the primary visual instruments in the ERJ-145 cockpit?

The primary visual instruments in the ERJ-145 cockpit include the artificial horizon, altimeter, and airspeed indicators. These instruments are essential for flight navigation and control, providing critical information to pilots during various phases of flight.

The artificial horizon, or attitude indicator, shows the aircraft's orientation relative to the horizon, indicating whether the wing is level or if the plane is climbing, descending, or turning. The altimeter measures altitude, allowing pilots to maintain the appropriate flight level and avoid terrain. The airspeed indicator provides vital information about the aircraft's speed relative to the surrounding air, which is crucial for performance management, particularly during takeoff, landing, and in-flight maneuvers.

These instruments are deemed primary because they directly inform the pilot about essential flight parameters that affect safety and aircraft management. Understanding the readings from these instruments is foundational to flying an aircraft safely. Other options, while they include important systems, do not primarily serve the basic role of pilot awareness and navigation necessary for safe flight operations.