Posts tagged traffic

Looking north west on Division at Ashland, 1939, Chicago

Looking north west on Division at Ashland, 1939, Chicago

Looking south on Michigan from Wacker, 1948, Chicago

Looking south on Michigan from Wacker, 1948, Chicago

Two photos taken from Lake Shore Drive at Belmont, looking south, 1951, Chicago.

Notice the three wide parallel lines that run along the drive. These were called “fins” and could be hydraulically raised or lowered depending on the time of day to regulate traffic patterns.

The first photo was taken between 6:30-9:30 am. One fin would be raised, creating 2 lanes of north bound traffic and 6 (!) lanes of south bound traffic.

The second photo was taken between 4 and 7 pm, showing 6 lanes designated as north bound (with three “express” lanes in the center) and 2 lanes as south bound.

During non-rush hour traffic, only one fin would be raised in the center, creating 4 north bound and 4 south bound lanes - the permanent configuration we have today.

I imagine this had the potential of creating chaos as the fins appeared or disappeared, but there are many mornings during my standstill commute downtown that I wish this was still in practice!

The north west corner of State and Randolph, 1965, Chicago

The north west corner of State and Randolph, 1965, Chicago

Looking south on State from Randolph, 1954, Chicago

Looking south on State from Randolph, 1954, Chicago

A newly installed traffic signal at Michigan Ave and Lake, 1935, Chicago.

A newly installed traffic signal at Michigan Ave and Lake, 1935, Chicago.

Looking north on State from Monroe, 1963, Chicago.

Looking north on State from Monroe, 1963, Chicago.

N Michigan Ave, 1930, Chicago.

N Michigan Ave, 1930, Chicago.

63rd and Halsted, 1935, Chicago.

63rd and Halsted, 1935, Chicago.

Traffic jam on N Michigan Ave, 1929, Chicago.

Traffic jam on N Michigan Ave, 1929, Chicago.

Entrance to the LaSalle St tunnel, 1893, Chicago.

Entrance to the LaSalle St tunnel, 1893, Chicago.

State and Madison, 1906, Chicago.

LoC.gov

State and Madison, 1906, Chicago.

LoC.gov

Lake Shore Drive at North Ave, 1929, Chicago.

Lake Shore Drive at North Ave, 1929, Chicago.

Looking north on N Michigan Ave at Illinois, 1931, Chicago.

Looking north on N Michigan Ave at Illinois, 1931, Chicago.

North on Lake Shore Drive from North Ave, 1943, Chicago.

North on Lake Shore Drive from North Ave, 1943, Chicago.