Why is it not advisable to change lanes frequently?

Frequent lane changes can make driving more unpredictable for others and increase the chance of mistakes. Each lane change requires careful observation, signaling, and judgment. If done often, the chance of misjudging distances or not seeing another vehicle rises, which increases accident risk. Also, the actual time saved by changing lanes often is usually very minor, especially in traffic. Many studies show that frequent lane changers gain little advantage, but create unnecessary danger for both themselves and other road users. For safety and smoother traffic flow, it is best to stay in your lane whenever possible.