Number of automobile accidents reduced, with decided saving in operating costs, on Indianapolis Union Railway; flashing-light crossing signals for protection of street traffic at 17 crossings; signals are in operation 24 hours per day; require total of 44 men, as compared with 64 men formerly required; results in saving of $15,984 per year in wages. (see also Ry. Age, vol. 85, no. 9, Sept. 1, 1928, pp. 426-427, 3 figs)
Gates replaced by flashing signals
Ry. Signaling
Railway Signaling ; 21 , n 10
1928
2 pages
3 Figs.
Aufsatz (Zeitschrift)
Englisch
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Gates replaced by flashing signals
Engineering Index Backfile | 1928
|Signals: Flashing green for productivity
Online Contents | 2011
Mode of Flashing for Malfunctioning Traffic Signals
British Library Online Contents | 2011
|Mode of Flashing for Malfunctioning Traffic Signals
Online Contents | 2011
|Flashing-light crossing signals save $3,000 annually
Engineering Index Backfile | 1932