Interestingly, at the end of the high short hood era for most railroads' locomotive purchases, a wreck occurred involving a GP7 with its long hood leading. In August, 1958, there was a head-on collision on the Erie, between two commuter trains, each moving at about 20 MPH. One had a PA1 and 5 cars, and the other had a GP7, running long hood forward, pulling 4 cars.
The PA over-rode the front end of the geep and shoved all the way to the diesel engine, about 20 feet. The first coach behind the geep over-rode the locomotive and crushed the short hood.
You would think that there would have been fatalities aboard the geep, but it was the other way around -- the Engineer and Fireman of the Alco PA1 died. It isn't quite as cut and dry as one might think from that basic information. The Engineer and Fireman and a Road Foreman of Engines were aboard the PA. The Engineer, who was running the engine and the Fireman, who was in the center seat, both ran into the engine room when they saw that there was going to be a collision, and were tossed into the machinery. The Road Foreman, in the Fireman's seat, rode it out and was merely injured. The Engineer and the Fireman on the GP7 remained in their cab and sustained injuries but lived, even though their locomotive telescoped at both ends. One would think that, if the GP7 had been running with the short hood in the front, the big Alco would have crushed the short hood and the cab, as it pushed 20 feet onto the geep.
You never know . . .