I suppose that track numbering could also vary.
On the Jersey Central mainline, east and north bound tracks were odd numbered, with Track 1 as the middle express track. West and south bound tracks even numbered, with Track 2 as the middle express track.
At Cranford, where the CNJ mainline was 6 tracks wide, track numbering from left to right (facing north) was 6,4,2 (West/South bound tracks) and 1,3,5 (East/North bound tracks).
This particular stretch between Elizabeth and Bound Brook was fairly high speed in its day, for Tracks 1 and 2. This CNJ 'broadway' handled Reading and B&O's top passenger runs as well as their freights and of course, CNJ's many trains.
This system appears to help identify the usual direction of traffic on numbered tracks. Also, that higher numbered tracks would generally handle slower and local traffic.