Norfolk Southern President & CEO Alan Shaw joined CNBC’s “Squawk on the Street” Friday following the company’s second quarter earnings announcement.

“We’re doing exactly what we said we were going to do” Shaw told CNBC’s Morgan Brennan. “We laid out aggressive targets for the year and, despite a weak freight environment, we’ve overcome that [by] accelerating our productivity initiatives. At the same time, we’re offering a great service product and we’re growing in our most service-sensitive markets – intermodal and automotive.”

On Thursday, July 25, Norfolk Southern reported income from railway operations at $1.1 billion and an operating ratio of 62.8%.

“We’ve got a clear line of sight and a roadmap over the next 18 months to drive revenue growth, continue to do that, and to drive productivity.” Shaw said.

Watch the full interview here.