Always Expect a Train.. Highway 30 follows Union Pacific's Transcon mainline across the state of Nebraska and along this line, there a lot of railroading crossings. In Lexington, there is reminder of the dangers of being near railroad tracks. A car that was hit at one of the road crossings east of town is still off the side of road. The phrase "Always expect a train" is written on both sides of the car as an eastbound Union Pacific manifest train rumbles by.