Final answer:
If you must drive more slowly than the traffic flow, you should travel in the right lane. This practice is for the safety and efficient flow of traffic and avoids congestion that could arise from driving in the left or center lanes.
Step-by-step explanation:
If you must drive more slowly than the traffic flow, the correct and safest lane to travel in is the right lane. The left lanes are usually reserved for faster-moving traffic, and it's normally expected that slower-moving vehicles keep to the right. When you drive at a slower pace, keeping in the right lane allows other vehicles to overtake you safely on the left. It's essential to follow this rule not only for your own safety but also for the orderly flow of traffic. If you were to travel in the left or center lanes, you could cause congestion and potentially unsafe conditions for both yourself and other drivers. Using hazard lights while driving slowly is not recommended unless there is an actual emergency or your vehicle is unable to keep up with the speed limit because of a mechanical issue.