Transit NETWORKS rather than transit LINES. Really need some transit network metrics. An index or transit networks, which covers frequency, travel time...not mode. Connections, count of nodes, that is the important thing. Do two co-linear lines count as connections? Yes, but with transfer penalty.
Need an index. Index is of what? Of the network. But I also need a 'score' for the entire network. Transportation networks use 'delay'. (Think I can use travel modeling software for this.) Two parts to it, though. The network and the TAZ. Socio-economic data is pretty easy to come by. LEHD, use the LODES, and I've got a trip-matrix.
Less frequent service makes transit journeys take longer, so it is equivalent to congestion?