There are fan websites with that information - some good, some not-so-much.
If you fan a given section of railroad enough, you tend to learn what’s what.
The Deshler rail cams have an associated spreadsheet (linked in the description of the cam) that tracks daily traffic. The regulars can spot the usual suspects and know the symbols. The scanner does come in handy, unless the crews neglect to call signals - and there’s plenty of signals to call at Deshler. There is a link to the local scanner, as well.
The recent change by CSX of a number of their symbols has caused a little confusion.
When I was working as a Train Order Operator - inspecting trains as the passed my location - day after day after day - you learn the relative make up of the various trains - Western route cars, Canadian cars, Southern route cars, mostly loaded box cars, mostly empty box cars, lots of small covered hoppers, lots of large covered hoppers - watch trains day after day as a employee and you begin to understand what each scheduled manifest train carried. That was back in the day before we at merged the rail system to the point that we only have six class 1 carriers. Two East, Two West and now Two N-S through mid-America.
To discern train identities today one needs a radio scanner able to pick up the road and dispatcher channels for the line segment you will be observing. You will also need to be able to understand the train naming conventions of the carrier whose line you will be observing. No two Class 1 carriers have the same train naming conventions. Employees of each carrier have at least a nodding acquaintance to their carriers train name conventions, use them as a resource when possible.
CSX rules require trains to announce Signals and Block occupancy by each train over the road channel, such as - Q21713 engine 666 West on #1 track - Clear Signal 21.3 - in the example Q217 is the basic train ID; 13 is its scheduled date at origin - everything else should be self explanatory. The Operating Plans of each carr
I did not notice anything unusual, just a standard freight. A few fallen flag* cars, but not unusual.
*Fallen Flag - For those who don’t know the term, this refers to railroads that are no longer in existance, such as Norfolk & Western, Western Pacific, Erie Lackawanna, etc…