As I had from 8-10 years of Recession and Depression. All I could do to attain the passenger requirement, was to micromanage/monitor every "unloading", click on the depot, to see which city had the highest demand.
There were a number of "engine crashes", and was able to keep a very marginal edge, to be able to replace the A1s with the Diesel200. This gave a better availabilith to keep the coal requirement to the Villa, which also was helping to get the $250K "bonus".
Since the 20th year, when the economy inched its way into the 1st "boom", I was able to get bonds at 5%, which was enabled by adequate revenue to pay off 4 of the 11-13% bonds.
Oh, I did manage to get the "expanded bridge" constucted, but to this, the 25th year, have not been able, have rather decided to just try to attain good revenue, so as not to need any micromanaging for a time, as well as expend to a couple other cities.
Right now, I have good operations with coal, passengers, and speed, but that could change when the Boom gets faded out. A little anxious to see the purpose of the bridge, considering up to this point, the requirement has been to expand the services to and from, and within Lisbon.
Oh, and to see what other "tricks" you have incorporated.
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