Final answer:
When merging onto a freeway from an onramp, drivers should expect vehicles on the main road to allow them to merge and adjust their speed or change lanes if necessary. Both merging and main road drivers should be alert and follow traffic rules.
Step-by-step explanation:
When merging onto a freeway from an onramp, drivers should expect vehicles on the main road to allow them to merge. This is a common practice to ensure the flow of traffic and maintain safety.
Drivers on the main road should be prepared to adjust their speed or change lanes if necessary to accommodate merging vehicles.
For example, if a car is traveling in the furthermost lane from the onramp, it should be aware that there might be vehicles merging onto the road from the onramp. The car should be prepared to slow down or switch lanes if needed to ensure the safe merging of the vehicles.
Overall, it is important for both merging and main road drivers to be alert and follow traffic rules when it comes to merging onto the road from freeway onramps.