as a test on the Pennsylvania Railroad proved

3 air horns

Here is a Digitrax DCS50 Zephyr Commond Starter Set

Trainz Product Id: 12392467

Lionel 2175W Vintage O 2343AA Santa Fe Diesel Freight Set ProductID_12398994 as a test on theThis Lionel #2175W O Gauge Freight Set includes two Santa Fe F 3 A units powered and non powered, New York Central Gondola, an operating New York Central Box Car, Sunoco Tank Car, Lehigh Valley Hopper and Illuminated Caboose. The powered A unit features dual motors, reverse unit, operating light, magnetraction, Horn, diecast metal trucks metal wheels and axles. The non powered unit features an operating light as well. Condition: Factory New (C 9)