Skyrocketing Gas Prices Spark Debate: Is Cruise Control Worth Using Today?
By James H. Sterling
Q1: Does cruise control save gas in urban city driving?
A1: No. Frequent traffic signals, pedestrian crossings, and rapid lane shifts force cruise control to repeatedly cut throttle and brake aggressively. City driving requires predictive coasting, which automated systems cannot execute in complex street environments.
Q2: Why does adaptive cruise control use more gas than regular cruise control?
A2: Adaptive cruise control depends on immediate reactive braking to preserve following buffers. When traffic speeds fluctuate, it alternates between applying the brakes and hard-accelerating back to the preset speed, wasting kinetic energy that a human driver could conserve by coasting.
Q3: At what speed does cruise control become most fuel-efficient?
A3: Cruise control achieves its highest efficiency benefit between 55 and 65 mph on flat, open highways. Above 65 mph, wind resistance climbs exponentially, offsetting the throttle stabilization advantages of the system.
James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.
