What authorizes a pilot to make intermediate stops along a route?

The ability for a pilot to make intermediate stops along a route is primarily governed by the flight plan that is filed. When a flight plan is submitted, it outlines the route of flight, the intended departure and arrival points, and any intermediate stops.

Typically, if a flight plan includes intermediate stops and they are approved by air traffic control, then a pilot can confidently make those stops as per the authorized route. Clearances from air traffic control will guide the pilot through the airspace safely but do not independently give authorization for intermediate stops unless specified.

While weather briefings provide critical information about flying conditions, they are not related to the authorization for stops between departure and destination points. To summarize, the correct focus lies in the flight plan as the foundational document that allows for intermediate stops along a designated route.