A common argument against standard time is that daylight saving time prevents traffic accidents due to the abundance of natural light at the times when most people drive. However, is it worth disrupting the circadian rhythm so that drivers have more natural light? Governments have implemented lighted highways and streets, and cars are equipped with headlights to make it easier to see. Although lighted highways consume energy, the claim that daylight saving time helps reduce energy consumption is contradicted by research efforts. Indiana only adopted daylight saving time in 2006, making it the perfect setting for a study on the correlation between energy consumption and daylight saving time. According to Brian Handwerk, “demand for lighting decreased, but adding an additional warmer hour of daylight each evening led to increased use of air conditioning, which negated the benefits of reducing lighting and more." Along with this study, the researchers argued that energy consumption may be lower in the evening, but increases in dark mornings, thus making the results equal. According to another study conducted by Hendrik Wolff, wherever there is air conditioning, daylight saving time is lost. In the long term, summer time therefore does not have a significant impact on energy consumption