Daytime Running Lights changed ???

[dеiтайожни]

Originally Posted by Michael1

30 million vehicles on road during day x 2 DRL lamps x 20 watts each (half power headlamps) = 1200 megawatts.

1,200,000,000 watts x 10 hours of daylight / 0.6 alternator efficiency / 0.2 engine efficiency / 1000 watts/kW/ 32.6 kW-hr per gallon of gasoline w/10% ethanol = 3,072,000 gallons of gasoline burned PER DAY for DRLs.

You can explain this one further, I must be missing something.

You are saying just the DRLs of 30 million passenger vehicles, around 10% of the nations registered passenger vehicles, account for about 1% of the entire nations gas usage a day? What does the engine of just these 30 million passenger vehicles use? 1,000,000% of the nations daily gas consumption?