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I had not considered the need for electric power transmission when I was considering a wireless alternative to the car-to-car connectors.  However, I found the following reference in this:  <A href="http://www.tsd.org/ecpbrake.html">http://www.tsd.org/ecpbrake.html</A> <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p> From the link:  “Two alternatives are under consideration for the signaling means that will be adopted as the interoperable standard for the 'physical layer' (a) wireless and (b) trainline.” <o:p></o:p> Perhaps this is obsolete information at this point, but if the wireless alternative were implemented, it would seem that an electric cable would be used only for power and the control function would be wireless. <o:p></o:p> In looking at the Booz/Allen/Hamilton FRA final report, I see that they show an electric cable with car-to-car connectors as separate from the air hoses.  They do not go into any detail on the electrical connectors, nor how they are operated for connecting and disconnecting.    I suppose that if there is a problem with the reliability of the connectors, it would emerge over time with repeated disconnecting and reconnecting.  And being that the initial application of ECP is to dedicated consists, the connector weakness may not be so apparent because they are not being repeatedly connected and disconnected.
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