A vehicle control system and method determine one or more designated speeds of a trip plan for a trip of a vehicle system along a route. The trip plan can designate the one or more designated speeds as a function of one or more of time or distance along the route for the trip. Geometry of the route that the vehicle system will travel along during the trip is determined, as well as one or more prospective forces that will be exerted on the vehicle system during movement of the vehicle system along the route for the trip based at least in part on the geometry of the route. The trip plan is revised to reduce at least one of the prospective forces by reducing at least one of the designated speeds of the trip plan based on the one or more prospective forces that are determined.