Re: The long and the short of it......?
Author: Dr Zarkoff
Date: 09-30-2016 - 01:20
>SMART is under FRA jurisdiction, so presumably normal railroad rules apply. That said, some systems do things a bit differently, or mount horns where they are technically OK but don't "carry" as far (e.g. Metrolink with horns that aren't up on top as on freight diesels and Amtrak)
The CFR regs are quite clear about loudness (96 to 110 db)and how far it has to carry (as measured 100' in front of the locomotive). As long as the horns meet these specs, it doesn't matter where they are located (a cab car is a locomotive under these regs).