Traffic signals

Traffic signal preemption and other technologies that seek to speed transit can have a similar effect. Faster bus travel means less fuel consumption per vehicle distance traveled. However, faster transit seiwce increases demand for transit, potentially increasing the transit load factor. 

Deakin, E Skabardonis, A and May, A. (1986). Traffic Signal Timing as a Transportation System Management Measure The California Experience. Transportation Research Record 1081. Transportation Research Board. Washiiigto, DC National Research Council. 

Self-Test 1.1A Calculate the wavelengths of the light from traffic signals as they change. Assume that the lights emit the following frequencies green, 5.75 x 1014 Hz yellow, 5.15 x 1014 Hz red, 4.27 X 1014 Hz. 

Springer TA. Traffic signals for lymphocyte recirculation and leukocyte emigration the multistep paradigm. Cell 1994 76 301-314. 

Self-Test 1.1 A Calculate the wavelengths of the light from traffic signals as they change (use the frequencies given above). 

The color of the red glass in these traffic signals is due to cadmium selenide, CdSe. 

Springer, T. A. (1995). Traffic signals on endothelium for lymphocyte recirculation and leukocyte emigration. Traffic signals for lymphocyte recirculation and leukocyte emigration The multistep paradigm. Annu. Rev. Physiol. 57, 827-872. 

Mashbum LM, Whiteley M. Membrane vesicles traffic signals and facihtate group activities in a prokaryote. Nature 2005 437 422-425. 

Clearness. People must be able to follow instructions easily and without misunderstanding. For example, red is used for Stop and green for Go in traffic signals. The directions for use, or an arrow indicating the firing direction printed on fireworks are based on this doctrine. 

T. A. Springer, Traffic Signals for Lymphocyte Recirculation and Leukocyte Emigration the Multistep Paradigm, Cell 76 (1994) 301-314. 

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