Most were worked by animal traction, and connected railway stations with town centers.
Horse- or mule-drawn vehicles used on some lines were eventually equipped with petrol (gasoline) engines (Morrison [1]).
Opening and closing dates are difficult to establish because the Mexican government did not conduct surveys of tramway systems between 1907 and 1922 (Morrison [2].
The tables below includes fewer than half the number of towns stated by Morrison.
The list below excludes hacienda tramways, which transported crops, other goods and passengers to and from plantations.