What must a driver do before merging from an on-ramp onto the freeway?

Prior to merging from an on-ramp onto the freeway, it is essential for a driver to accelerate to match the speed of traffic. This practice is critical for ensuring a smooth and safe entry into the flow of vehicles already on the freeway. When merging, maintaining a speed comparable to that of existing traffic reduces the risk of accidents, as it allows for easier integration into the traffic stream and minimizes disruptions.

Matching the speed of freeway traffic involves using the acceleration lane of the on-ramp to build up speed before entering. This approach not only promotes safety but also improves overall traffic efficiency. If a driver were to stop fully before merging or maintain their current speed, it could lead to dangerous situations where other drivers may not expect a vehicle to merge at such a slow pace, potentially resulting in collisions or hazardous maneuvers.

Additionally, merging without checking mirrors could lead to dangerous blind spots not being accounted for, increasing the risk of accidents. It is always important to check mirrors when merging to ensure that the way is clear and that it is safe to enter the freeway. Thus, accelerating to match traffic speed is the correct and safest action to take when merging from an on-ramp.