In Part 1/Chapter 3 the book moves into passenger locomotives, covering EMD's well-liked F40PH model and F59PHI. The former was long-used by Amtrak and various commuter agencies while both continue to be operated in suburban service throughout the country and Canada. You will also learn about MotivePower's newer HSP-46 line and popular MPXpress. Finally, there is GE's "Genesis" line. These successful locomotives have been the most popular in North America since the introduction of the original P40DC in 1992. It was not since the 1960s that a new model, designed exclusively for long-distance passenger service, had been cataloged in the United States. The P40DC was based from GE's successful B40-8 freight model but essentially designed from the ground up including its carbody, the work of industrial designer Cesar Vergara.
The later P42DC variant released in 1996 remains Amtrak's primary workhorse today; it is all but identical to the P40DC in appearance but features more horsepower and upgraded "Dash 9" electronics. The final version is the P32AC-DM which entered service around the same time as the P42DC. It is identical to EMD's popular FL9 in that it's a dual-service locomotive capable of running either via diesel engine or third-rail, electrical pickup. Of course, GE's version is much more advanced with the ability to switch between modes at-speed while producing between 3,200 and 4,200 horsepower (the FL9's output was only around 1,800 horsepower). The current users of the P32AC-DM are found only on the Northeast Corridor and include Amtrak, Metro-North, and the Connecticut Department of Transportation. Just like the P40DC and P42DC the locomotive carries a similar exterior appearance.
In Part 2/Chapters 6 and 7, Solomon highlights self-propelled cars such as Budd's once-popular Rail Diesel Car (RDC) as well as never versions now popular within light-rail transit (LRT) operations. Moving into Part 3/Chapters 8, 9, and 10 you can read about modern-day freight and passenger cars. These particular topics could and have had entire books devoted to their background and history while Solomon only briefly covers the subject, featuring more-common types such as bi-level commuter cars, gallery cars, tankers, and flat/well cars used in intermodal service. Where Foster's book only generally highlighted this subject, Solomon provides detailed specifications including weight, length, height, width, types (freight), and number of seats (passenger); very handy information if you are doing research or would like to know this information!
Moving into Part 4/Chapters 11 and 12 the book covers the subject of light-rail transit vehicles in greater detail. And finally, it concludes with Part 5/Chapters 13, 14, and 15. This section will surely appeal to history buffs and most railfans as classic steam, diesel, and even electric locomotives are presented ranging from the 4-8-4 "Northern" to Milwaukee Road's unique "Bi-Polar" electrics found in the Pacific Northwest until the mid-20th century. The very last chapter covers an often-overlooked aspect of the railroad history, the once widespread streetcar. Since there are only a few pages devoted to the topic Solomon sticks to the most popular types, Birney Safety Cars and the utilitarian PCC (Presidents' Conference Committee Car).