What color lines are used to divide traffic traveling in the same direction?

Answer: C — White

The color white is used to delineate lanes of traffic moving in the same direction. This is a standard convention on most roadways, indicating separate lanes for vehicles traveling parallel to one another. White lines help maintain organized traffic flow, making it clear where vehicles should position themselves within their lanes. In contrast, yellow lines are typically used to separate traffic moving in opposite directions, while red and blue lines are less commonly associated with standard lane markings. Red may indicate stop or no entry, and blue is often reserved for disabled parking spaces or related signage. Thus, the use of white lines is specifically designed to enhance safety and clarity for drivers moving in the same direction.