What action should a driver take after signaling while merging onto an expressway?

When merging onto an expressway, it is essential for a driver to adjust their speed to match the flow of traffic. This is crucial for ensuring a smooth and safe merge into the roadway, as expressways are designed for high-speed travel. Fitting into the established speed of other vehicles helps prevent collisions and maintains the overall efficiency of traffic movement.

Maintaining a compatible speed allows the merging driver to slot into gaps between cars and ensures that they do not disrupt the traffic patterns. It also helps in making the process of merging less abrupt for both the incoming vehicle and the established traffic, which minimizes the risk of accidents.

In contrast, gradually decreasing speed or coming to a complete stop would create potential hazards for both the merging vehicle and other motorists on the expressway. Stopping while merging can lead to rear-end collisions, while going slower than the traffic flow can provoke aggressive driving behaviors from other drivers. Switching to high-beam lights does not apply to merging practices, as high-beams are used for visibility at night and can dazzle other drivers, creating unsafe conditions.