PNWRailfan Wrote:
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> Almost none of the usual switcher restrictions
> apply to these locomotives. They have the road
> trucks with standard gears rated for about 74mph
> max, or at least the SP ones did. They also have
> toilets and most have auto alignment couplers. The
> MP15's were designed to be replacements for GP9's
> on road switcher jobs.

Actually, the GP15's were designed to replace GP7's and GP9's.

On Southern Pacific, SW1500's and MP15's were restricted to 65 MPH.

On Union Pacific, SW1500's are restricted to 50 MPH and MP15's to 70 MPH when handling cars or when in a locomotive consist that is controlled by a unit with operative dynamic braking. Both types are restricted to 45 MPH when used as a controlling unit running light (25 MPH on descending grades exceeding 1%.)