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[quote user="BaltACD"]   I find it interesting that at some locations conventional Passenger and Talgo have the same restrictions, at other locations they are different.  What is more interesting is the the I-5 bridge restriction is 30 MPH for all.  From 19.9 to 21.3 Talgo's get 42 MPH and Conventional equipment is 35 MPH.  Of additional interest the speed for freight from 19.8 to 21.3 is 10 MPH. [/quote] The speed of a Talgo train compared to a conventional train is not a fixed amount. The speed increase depends on the radius of the curve. The larger the radius the larger the speed increase. At small radii the increase gets so small that it is not practical to post different speeds. The Cascade Talgo trains are conventional locomotives with tilting Talgo cars. So at some point the allowed lateral acceleration for the locomotive crews might become the limiting factor. Regards, Volker
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