@Rich Melvin posted:Real railroads would rarely use a double crossover. The center frog in that arrangement is a very high maintenance item. If a railroad needs crossovers in both directions, they would use two single crossovers. The length required for this is not a concern on a real railroad.
In addition, the even more modern way of railroading tends to require much higher speed turnouts/cross-overs (50 MPH to 65 MPH for example) which also require a movable-point frog. Thus, there is no way a multiple frog crossing (diamond) would be used for such higher speed cross-overs.
The double cross is more of a space-saving measure for model railroads.
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