The "Sound of Amtrak" is one of several interactive exhibits aboard the Amtrak Exhibit Train (former 40th Anniversary Exhibit Train). Examples of all four horn models specifically tuned to Amtrak's request over the years are featured and recordings of each can be heard with the push of a button. From left to right the horns are as follows: K5LA, P1234A5L, SL-4T and P01235
