Keith Creel
Analyst · Morgan Stanley
Good morning. Thanks, Chris. Listen, before we get to the results, think it's only appropriate on behalf of our CPKC family to extend our heartfelt prayers and condolences to Jim Foote's family and friends. As many of you know, we lost him last week, many of us in this industry have had the honor to serve the Jim during his multiple decades of service to this industry. I can tell you myself personally I'm going to cherish the memories and the experiences. He was a wonderful man, a dedicated man. Dedicated to this industry, dedicated to the railroads that he worked for and the people that we serve with. If you knew him, there are a couple of things that are undeniable about him. He loved his friends, he loved his family and he loved the companies that he served and have led this industry. It's a man lost too soon. I can tell you, he left it better. The memories and experiences will not be forgotten, nor will Jim, nor will his impact on this industry. So all the best, again, to his family. Payers and condolences.
So with that said, let's -- I want to thank you for joining us on the call today. So we get to share our results. As I always will, I want to start my comments thinking -- the 20,000 strong family of railroaders that enable the results that we can share today.
As you're all aware, we just celebrated our 1-year anniversary just last week of this historic combination. We're here to celebrate actually today in Calgary, another historic event. We're going to launch our final spike steam tour this afternoon. So super exciting day in Calgary after we get to share these results and do our AGM, we get to celebrate with our employees and start this historic and iconic trip across all 3 nations. So for the next probably 35, 40 days, we're going to get to spend time and thank the communities that we operate in and through all the way from Calgary down to Mexico City.
So I thank the employees, again, that have been specifically involved in enabling this creation, this vision we created 2 years ago with the culmination of the launch today. So thank you for that. And I hope many of you across this network will have a chance to participate in that.
So looking back at this last year of our favorite story, I'd tell you, I can't be more pleased with the progress. We're delivering on the commitments we made to create competition. We're delivering a safe and efficient service, and we're expanding our service contingently. We're creating new and expanded customer relationships over the new markets that we're creating, collaborating, that is only enabled because of this historic combination. I'm pleased with the results we produced in the quarter. It's been a strong start to the year from an RTM and an operational perspective. Yes, it was a tough January, but I can tell you, Mark, and the operations team recovered quickly, and the bonds have exceeded the expectations that we provided during our Q4 earnings call.
So specific to the results, the first quarter produced revenues of $3.5 billion, which was an increase of 2%, an operating ratio of 64%, which is about 50 bps increased versus last year, core EPS of $0.93, an increase of 3%. Despite a challenging start from the year, the volumes wind up 1% for the quarter.
On the operating performance, I'm extremely pleased with how the network bounced back from the January challenges and the resiliency that the team displayed, the momentum that we created and carried in the quarter with strong gains across the network and speed dwell on locomotive productivity. The improvements were pronounced in Mexico, where we continue to see large improvements across our operating metrics. Several of the key metrics that we follow internally have improved significantly in Mexico this quarter. Car Miles per Car Day, locomotive productivity, both up over 20% year-over-year.
Active cars online down 15%, dwell down productivity improving. The gains we've made in Mexico, the improved velocity, they've allowed us to optimize our asset base. We've been able to park assets. We've been able to redeploy as many as 60 locomotives in fact, during the quarter to other parts of the network to address winter weather and serve stronger-than-expected demand. It's a huge credit to the operating team demonstrating the power of a true precision scheduled railroading operating model. In fact, I think it's better said at CPKC as PSR Prime.
And importantly, these improvements continue to come at a time when in Mexico, we're delivering an all-time highly GTM performance. So management changed, as you would have seen in March, we made a change to our leadership team in releasing John Orr from his commitments to CPKC. Again, I'd like to thank John for his contributions and the impact of the leadership that he had. As a leader, I believe it's your challenge to leave it better and John did that. He did that in the service to the KCS while the company was in trust as well as the CPKC until its departure just last month. We're fortunate to have an extremely talented and deep bench of PSR railroaders on our team. So the decision to release John was not an easy one, but it was made possible by the strength and the depth of the teams we actually have a CPKC.
The plan was always for the Mexican operations to eventually report into Mark as our COO and with a strong performance in Mexico that I've mentioned, the experienced team that we have in place, it just simply made sense to accelerate that plan. So credit to the entire operations team since John's departure, they haven't missed a beat. We're continuing to execute, drive improvements and provide great customer service to our customers.
So in closing, I'm happy to start -- I'm happy with the start that we've had to the year our performance so far in the second quarter as well. We're poised to be the most relevant rail network in North America uniting a continent, adding competition in the industry and delivering new options along with safe and efficient service to our customers.
So with that said, I'm going to hand it over to Mark to speak to the operating performance. John is going to bring some color to the markets and then Nadeem will close, elaborating on the numbers before we open it up to questions. Over to you, Mark.