light raillight rail
A rail transportation system involving trolleys, streetcars, or other, usually electrified methods of conveyance, whose rails are primarily on surface streets that are shared with other forms of transportation.
(plural light rails)
- Streetcars (trolleys) did not have their own rights of way. Traditional railroad commuter lines would have high construction costs. Interurban electic railroads were not much used for commuter service. Subways and other rapid transit, with few or no grade crossings, also have high construction costs.