Engineers adjusted the track gauge to ensure trains could pass safely on the aging bridge.

The four-track corridor allowed express and local trains to run side by side without delays.

Engineers compared different track gauges to determine which would best support high-speed trains.

Maintenance crews inspected the aging track beds before the winter storms arrived.

The engineering team will slab-track the damaged stretch overnight to minimize disruption.

We will fast-track the approval process to meet the project deadline.

To meet the deadline, the team put the proposal on the fast-track.

She walked along the old race track at sunrise, remembering the sound of engines and cheering crowds.

She decided to back-track on her earlier statement after reading the full report.

The film's sound track beautifully combined classical motifs with modern electronic textures.