Time/Speed Benefits of Concrete Ties

What are the speed capabilities for using Concrete Ties? Comparison versus new concrete ties vs. worn out concrete ties vs. wooden ties.

Also the same information for steel ties and composite ties? as well as the cost for these

Thanks

All help is greatly appreciated

This topic would be best served elsewhere. Amtrak isn't the only railroad in North America to use them, so let's ask this question where appropriate.

Dave Becker

Look on here and you'll learn all about concrete ties.