Final answer:
When entering vehicles are spotted on the ramp, you should move left to facilitate smooth and safe entry, if safe, or adjust your speed to allow for merging; it is unsafe to increase speed to outpace merging vehicles.
Step-by-step explanation:
When driving on the interstate and you see vehicles on the entrance ramp to your right, the appropriate course of action would be to move left to allow them a smooth, safe entry, if it is safe to do so. Doing this helps maintain traffic flow and ensures safety for both you and the merging vehicles. If moving left is not possible, you should stay aware and adjust your speed accordingly to allow for safe merging if necessary. It is not advisable to increase your speed to beat the vehicles on the entrance ramp, as this could lead to dangerous situations and potential accidents.