When approaching areas with increased traffic congestion, it is important for drivers to adjust their speed to ensure safety and maintain control in unpredictable conditions. The recommended speed in these areas is often lower than typical highway speeds to accommodate the potential for sudden stops, merging vehicles, and pedestrians. A speed of 55 miles per hour is generally considered a safe speed limit in many congested areas, as it allows drivers to react more effectively to unexpected situations, such as vehicles stopping or slower-moving traffic.
Higher speeds, like 65 or 70 miles per hour, may not be realistic or safe in congested areas where traffic flow could be disrupted. Similarly, while 45 miles per hour might seem reasonable, it could be slower than necessary for some congested situations where a higher but controlled speed is more appropriate. Therefore, 55 miles per hour is a balanced choice that takes into account the need for safety and responsiveness in traffic conditions.