4. Rolling stock design
4.1 General technical design
The evolution of electric streetcars can be summed up as follows:
1881: first two-axle railcars with a traction motor transmitting its force by means of a chain, wooden body with external sheet metal finish;
1891: First bogie locomotives;
1915: first "Peter Witt" streetcars with front entrance and middle exit in Cleveland U.S.A., payment to a ticket collector seated near the exit door;
1928: Massive construction of "Peter Witt" railcars with automatic start in Milan (502 railcars), Turin (216 railcars), Naples (106 railcars), Trieste (48 railcars);
1935: appearance in the USA...
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Rolling stock design
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"Railway systems"
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