What is the primary counter-intuitive goal achieved by dynamically adjusting ramp metering rates?

Answer

To prevent a catastrophic, system-wide gridlock

Ramp metering slows down vehicles entering the main highway when congestion is high. This deliberate, small slowdown on the ramp prevents the mainline traffic flow from collapsing entirely into gridlock, effectively speeding everyone up overall.

What is the primary counter-intuitive goal achieved by dynamically adjusting ramp metering rates?

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