(1) Rate per mile at which the bond is issued. Applying the general principle indicated above, it must be learned what proportion the bonded debt of a railroad bears to the total market value of the property. It is much easier to make this comparison on a per-mile basis. In determining whether the rate per mile is excessive, reference must be made not so much to the particular bond in question as to the total bonded debt per mile of the railroad, and to the relation which that figure bears to the total market value of the property per mile. The total market value per mile is obtained by adding the market value of the stock per mile to the par value of the bonded debt per mile. A single issue of bonds varies all the way from $5,000 to $100,000 per mile, according to the location of the railroad. Total capitalization per mile—stocks and bonds at par—varies in about the same proportion, from $35,000 to $300,000. The average for all the railroads of the United States is $67,936 per mile. The actual cost of the railroad, as shown by the balance-sheet, must be taken into consideration, and also the estimated cost of duplicating the property. Physical difficulties of construction must be weighed, for a railroad through a flat, sandy country should not be bonded for as much, other things being equal, as a railroad through a mountainous country, where much cutting, filling, and bridging are required. The section of country in which the railroad is located must be considered, for $35,000 per mile on a single-track line in a poor country may be higher than $300,000 per mile on a four-track trunk line which owns valuable terminals and rights of way through several large cities.
(2) Amount of prior lien bonds outstanding per mile. The amount of bonds which come ahead of the bond in question on the same mileage is a matter of great importance and works directly against the security of the bond. Purchasing a bond which is preceded by a prior line bond is like taking a real-estate mortgage on property already encumbered. If the bond is not followed by other bonds, then the margin of security in the property is represented wholly by the market value of the stock per mile, and the investor must figure carefully the value of this equity.
(3) Amount of junior lien bonds outstanding per mile. The amount of bonds which come after the bond in question, on the other hand, works directly in favor of the bond, for it increases the margin of security. It shows also that other people have had sufficient confidence in the property to invest their money in obligations subject to the one in question. In the event of a receivership this is often a matter of great importance; for if a foreclosure sale is ordered the junior bondholders, in order to protect their own interest, must buy in the property for an amount at least equal to the par value of the prior lien bonds.
The foregoing considerations apply particularly to the safety of the principal invested in railroad bonds; the following points affect the safety of interest:
(4) Gross earnings per mile. The gross earnings of a railroad must be compared with those of other roads occupying the same field, and the returns for a number of years must be examined to determine whether such earnings have increased or decreased. The position in which the railroad stands for obtaining new traffic must be noted. This is dependent somewhat upon the railroad's ability to take traffic from other railroads, but more upon the probable growth and development of the territory which the railroad serves, and the increased traffic which will probably be offered. In this connection the rate of increase in population in the road's territory is important. The proportion between passenger and freight earnings, the diversity and density of freight traffic, and passenger and freight rates should be examined. The reputation of the management for ability and integrity should be considered. Gross earnings run from about $3,000 to $40,000 per mile with the average $10,460.
(5) Net income per mile. Net income is obtained by subtracting from gross earnings operating expenses (and sometimes taxes) and adding to the net earnings so obtained whatever income from other sources the railroad may derive. This is a very important figure. As with gross earnings, the reports should be examined to determine whether net income is on the increase or the decrease, and it should be compared with the net income of other railroads occupying the same field. It involves a criticism of operating expenses. The payments of the railroad must be analyzed to determine whether the proper sums have been expended for maintenance of way, replenishment of rolling stock, and other improvements sufficient to keep the road in good physical condition. Normally speaking, operating expenses should absorb about 65 per cent of gross earnings. If it is found that a railroad operates for 60 per cent, however, it does not always follow that its operating officials are exceptionally efficient, so that the cost of conducting transportation is relatively small; it may mean that the physical condition of the property is being neglected, or that ordinary improvements, which should be charged to maintenance, are being paid for by increase in capitalization. It is very important for the investor to find out which is the case. If analysis leads to the suspicion that the earnings result from neglecting the property or capitalizing every trivial improvement, the railroad's bonds should be rejected. Net income varies from $1,500 to $12,000 per mile, with an average of $4,702.
(6) Fixt charges per mile. The fixt charges of a railroad include interest on its bonds, rentals, and taxes (when the last-named are not reported with operating expenses). The importance of this figure lies in its relation to net income. If a railroad does not earn well over double its fixt charges, its obligations can not be regarded as in the first investment rank. Of course, when a railroad earns more than twice the interest requirement upon its entire bonded debt, it is probable that some of the underlying bonds are protected by three, four, or five times the interest requirement upon them, and their position is correspondingly strengthened.
The foregoing analysis applies particularly to mortgage bonds upon the general mileage of a railroad and not to such special issues as collateral trust, terminal, bridge, or guaranteed bonds. It will not be necessary, however, to lay down any rules as to these classes of bonds, for the general principles outlined above, with slight modifications of detail, will be found equally applicable to a judgment of their value. Equipment bonds, on the other hand, owing to their want of similarity to any other railroad issues, will receive separate treatment later.
It is of interest, in view of the present diminished confidence in railroad securities, to advance certain considerations touching upon the safety of railroad bonds in general.
The last published report of the Inter-State Commerce Commission, year 1906, furnishes interesting testimony on this subject. A table on page 60 shows that the total railroad capital of the United States for that year was $14,570,421,478, of which $7,766,661,385, or 53.31 per cent, was in the form of bonded debt, and the rest in capital stock.