COMPARATIVE PASSENGER CAPACITIES OF MAJOR TRANSIT AND TRAFFIC IMPROVEMENTS

One express-local subway will carry 100,000 passengers per hour in one direction on two tracks. Twenty-one four-lane elevated highways would be required to carry the same load in autonnobiles.

It everyone came to work by private automobile, each office building would need a garage of the same size for the storage of vehicles.

Transit Journal, September 26, 1938, Part of an Editorial Entitled "Transit's Job Masses."

Moving the SCALE .7

A Picture of the Transit Problem in the United States.

1. The first chart presents graphically passenger capacities of surface streets.

2. The second one gives comparative passenger capacities of major transit and traffic improvements.

3. The third shows the amount of space that would be needed for garage if everyone came

to work by private automobile.

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GRAPHIC PRESENTATION

* Electrical horsepower in factories

Elrctriral World. Ortobrr 8. 1938 Part of an Editorial on PuMic Rrlations Entitled What Elcrtririty Mrant to Amrrira "' SCALE .6

A Comparison of the Status of Labor in the Electrical Industry and the Increased Production in That Industry in 1899. 1914. 1925, and 1937.

1. The implication of this chart is that with the increase in use of electrical horsepower in

factories, average wages per hour go up and average hours per week go down.

2. Note that the two curves and the bars have a common zero line, but the scales arc

different.

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Chapter 44 SUGGESTIONS FOR MAKING A CHART

I HE FIRST problem in producing a chart, assuming that the data have been gathered, is in the choice of materials to be used in drawing it. Often the materials at hand in the office or drafting room are sufficient. It is also possible to plan the production of a chart, basing all the plans on the materials at hand.