Infrastructure and rolling stock Prior to the 1894 decision to electrify its tracks, the Metropolitan had placed an order from the Baldwin Locomotive Works of Philadelphia for steam locomotives. After the decision, however, the order was modified to instead provide for electric "motor cars" and unpowered "trailers". Electric traction in the late 19th century and early 20th centuries was such that one motor car generally pulled multiple trailers. Humboldt Park trains were unusual in that their motor cars instead pushed their trailers onto Logan Square trains to be coupled for the trip downtown, except during
rush hours when Humboldt Park trains went directly downtown or night hours when the trains were only one car each. The Metropolitan adopted
multiple-unit control during 1904–1905, eliminating the need for Humboldt Park trains to push trailers onto Logan Square trains, although combining Logan Square and Humboldt Park trains at Damen continued in some form or another until 1950. In common with the other companies building what would become the Chicago "L", the Metropolitan provided
wooden cars for its lines. The first trailers were built by the Pullman Car Company, whereas the first motor cars were built by Barney and Smith. Subsequent orders for trailers were built by Pullman, Harlan and Hollingsworth, and
American Car and Foundry Company (ACF), and further motor car orders were fulfilled by Barney and Smith, Jewett, ACF, and Pullman. Wooden cars remained dominant in the "L" fleet throughout the first half of the 20th century. After the CER assumed operations, it placed two orders for steel-bodied cars from the
Cincinnati Car Company in 1914 and 1924, known collectively as the "4000-series"; however, as late as 1949, only wooden cars were assigned to the Logan Square branch. When the first
6000-series were delivered in August 1950, they were placed on the Logan Square and Humboldt Park branches for trials in anticipation of the subway's opening. Given that only metal cars were allowed in the subways, most 6000-series were put into service on the branches.
Schedules and fares As originally opened, the Metropolitan's trains ran every six minutes between 6 a.m. and 6:30 p.m., and every ten minutes during the night. The average speed was , and trains took 22 minutes to go from Robey to Canal. The fare across the "L" was legally mandated to be a
nickel (5 cents, $ in 2021) in the late 19th and early 20th centuries. The nickel fare continued until temporarily increased by a cent to 6 cents in 1917 ($ in 2021) before stabilizing to a
dime in 1920 (10 cents, $ in 2021). Starting in 1922, fares were usually marketed in packs of three rides for 25 cents, or cents per ride ($ per ride in 2021), but individual fares remained 10 cents each. At the same time, a weekly pass was introduced, the first in a major American city, for $1.25 ($ in 2021) for rides outside of
Evanston and
Wilmette. Unlike other elevated railroads at the time, the Metropolitan did not sell tickets for passengers to present to staff; instead customers gave their nickel to the station agent to record in a registry, a practice similar to streetcars at the time. This practice was ultimately adopted by the other elevateds. As late as 1960, after the original Logan Square branch was supplanted, there was no
fare control at Damen besides the station agent. Originally, station agents were on duty 24 hours a day;
conductors were introduced on the Logan Square, Humboldt Park, and Northwest branches to instead collect fares on trains during night and off-peak hours in 1931 and remained in use through 1937, although the Northwest branch regained 24-hour station agents in 1935.
Ridership From 1900 through 1903, Robey was the highest-ridership station both on the Northwest branch and the entire Logan Square branch; in that same time, Western was the busiest station on the Logan Square branch proper in 1900 before being surpassed by the Logan Square terminal from 1901. Starting in 1904 the Logan Square terminal would surpass Robey to be the busiest station on the combined branch every year, but Robey would continue to lead the Northwest branch every year through 1945 and again in 1948, being beaten by Chicago for 1946 and 1947. The Northwest branch's ridership peaked , compared to a 1926 peak of the Logan Square branch proper . Prior to 1937, ridership figures for the Lake Street Transfer were counted separately between the Metropolitan and Lake Street Divisions, while afterwards they were all recorded under the Metropolitan. Including only the Metropolitan's riders prior to that year, the station at Lake Street would be the lowest-ridership station on the Northwest and combined branches every year through 1936; however, combining its figures with that of the Lake Street's portion of the Transfer after 1913, the least-patronized station on the Northwest and combined branches becomes Madison in 1913 and Grand every year thereafter, including after 1937. The lowest-ridership station on the Logan Square branch proper was the Logan Square terminal in 1900 and Western in all subsequent years. ==Stations==