While motorcycle engines aren't usually strong enough for heavy cars, some models are lightweight, allowing them to make full use of these powerhouses.

An electric motorcycle uses high-voltage technology from electric cars. It can charge at home or at public charging points.

Transportation, like most human behaviors, is shaped by a mixture of utility, convenience, visibility, and familiarity. As energy-conserving, satisficing humans, we reach for what is easy, what we can ...

Re “Teenagers’ Accidents Expose the Risks of E-Bikes” (front page, July 31): While it is clear that stronger regulation around the speeds of e-bikes is needed, roadway design determines the safety of ...