I like to build complex train networks and was wondering whether there is a way to visualize rail usage or something like heatmap? For analyzing the network, finding bottlenecks or unused parts.
I it's not done yet, then one idea i've thought of would be to have an counter for each field and increment it when train passes over it. It's got a problem with bridges/tunnels but it would be enough for what I'm interested in

Thanks in advance, have a nice day

Pajasas