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Furthermore, they must qualify as a class 1,2 or 3. Class 1 low-speed electric bicycles have a motor that provides assistance only when the rider is pedaling and does not assist over 20 miles per hour. Class 2 low-speed electric bicycles have a motor that can exclusively to propel the bicycle and does not assist over 20 miles per hour.
A University of Tennessee study provides evidence that energy expenditure (EE) and oxygen consumption (VO 2) for e-bikes are 24% lower than that for conventional bicycles, and 64% lower than for walking. Further, the study notes that the difference between e-bikes and bicycles are most pronounced on the uphill segments. [55]
Only the Chinese market for pedelecs and e-bikes is bigger than the European. According to the National Bureau of Statistics in China, more than 100 million e-bikes are on the road. Annual production in Chinese factories has increased from 58,000 in 1998 to 33 million in 2011. A pedelec classification separate from an e-bike is not known in China.
A 2WD or AWD bike sends power to both the front and rear wheels for increased traction. The wheels can be driven via belt, chain or shaft and can be powered by human, electricity, fossil fuel or a combination of the three. Sometimes for electric bikes this referred to as dual motor or twin drive.
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The use of sidewalks as Class III bikeways is strongly discouraged.“ [1] “on-roadway, signed (but not separated) bike lanes [2] - Sharrows: The Wiggle: Class IV: SEPARATED BIKEWAY “A bikeway for the exclusive use of bicycles and includes a separation required between the separated bikeway and the through vehicular traffic.