What is being used in trains now could be used in delivery trucks. Soon to be in Los Angeles' highways are electric trucks powered by trolley. This technology will solve problems on air pollution contributed by emissions of large delivery trucks on roads.

The hybridelectric trucks developed by Siemens draws power from the cables like a trolley. Thus, like trains roadways would be stringed with electrical cables. From Gavle, Sweden, which is the testing place for this project, it would now be functional to a part of the 710 and 405 highways in Los Angeles.

In a closer look, an extendable power coupler on the roof of the trucks is noticeable. This would link the electric truck to the lines hanging above the right lane in order to have a solid connection to the on-board battery. The truck is not electrically functioned alone it still would use diesel power for some needed situation on the road. For instance, if the truck would want to pass ahead a slower vehicle the driver would flip the turn signal and automatically the power coupler would be retracted, and its now the time to use the diesel power as reported by Digital Trends.

The five-kilowatt hour onboard battery is just a fraction of the 6-kilowatt battery in the Chevrolet Bolt. Unlike diesel-powered alone, the power generation in this electric truck does not charge the battery when the brake is applied, it would only go back into the power grid through the coupler.

These features are not the only advantages of this electric truck technology it would also reduce noise pollution as it would run so quite. The only disadvantage Siemens has noticed is the tangle of wires installed above the roads. Stefan Goeller, head of the railway electrification at Siemens said that what they see quite often in this industry is that "one technology never covers it all."
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