Final answer:
At an intersection of a two-lane road with a four-lane road, typically the car on the two-lane road must yield to the car on the four-lane road, unless traffic signs or signals indicate otherwise.
Step-by-step explanation:
When two cars meet at an intersection of a two-lane road with a four-lane road, the car on the two-lane road must yield to the car on the four-lane road. This is typically because the four-lane road has higher traffic flow and may be designated as the main road, whereas the two-lane road is considered to have secondary status. If there are traffic signs or signals present, those will take precedence in directing traffic. The driver must also consider specific local traffic laws and the right-of-way rules that apply to that particular intersection.