Final answer:
A road sign indicating an additional lane begins at the point where two roads come together is a traffic warning that helps maintain safety by informing drivers of changing road layout, particularly relevant in areas with traffic increases.
Step-by-step explanation:
A road sign indicating you are approaching a point where two roads come together but you are not required to merge is there to inform drivers that an additional lane begins, typically on a freeway or a multilane road. This sign helps drivers understand that the roadway will expand, allowing for increased traffic capacity. With the information provided, particularly in the context of a freeway on-ramp, this sign suggests that vehicles entering from the on-ramp will have their own lane for a certain period before they need to blend with the main flow of traffic. The usage of such a sign increases safety on the roads by reducing the need for merging maneuvers at the point of entry and by providing clear instructions to drivers.
In situations of increasing traffic, such as near a manufacturing plant or during specific events like football games, additional signs may be installed or current signage may need to be assessed to ensure the safety and efficiency of the increased traffic flow.