OpenSCENARIO intents behind motion control action's goals

Motion control actions (sub group of private actions) are trying to track a goal and are completed when the associated control strategy meets its goal. However, how are these goals met in runtime?

Say a speed action is set to increase the speed to 50. Does the action end the first time the speed is equal to 50? Or is it when the vehicle is travelling in steady state, at 50?

OpenSCENARIO needs to be clear about its expectations so that scenario designers and tool implementers can make sense of the standard. From my perspective, the scenario expresses the intention in terms of steady states; like "stable states" to build the remaining scenario on. Is this the general interpretation? What is the standard's official interpretation?

All motion control actions should be checked and unambiguity in their goals eliminated if applicable. We should find a more generic way to describe what the standard means with "reaching goals".