robmausser
Senior Member
Another problem is that the industry is too afraid, cheap or broke to develop a new dmu to replacement. I dont understand why they dont see the merits of a dmu for routes that dont require a huge honking diesel loco pulling just 2 cars and wasting resources.
The reason is because of FRA crashworthiness requirements.
You have to overbuild the DMU's so much that it becomes just as heavy as a train with a prime mover and with engines tucked under the train that are hard to access, maintain and are often underpowered for the weight and structural stregth needed to survive a collision with a freight train.
You can get exceptions, but those are more for branch lines or lines not even connected to mainline freight, like the Ottawa Trillium line or the San Diego Sprinter, for example.
Via deals with almost exclusively freight shared tracks.




