There are sliding doors that you can close at any time, or leave the door open for easy access to the hallway. You can lock the door when you are inside the roomette, but you cannot lock it from the outside, so avoid leaving valuables in the roomette when you are not there.

Yes, you can lock your Amtrak sleeper car door from the inside, but not from the outside. All Roomette and Bedroom accommodations on Amtrak's long-distance trains (like the California Zephyr or Empire Builder) feature a sliding door and a privacy curtain. From the inside, there is a manual latch or deadbolt that prevents anyone from entering while you are sleeping or relaxing. However, these doors do not have keys or electronic locks. This means that when you leave your room to visit the Dining Car or Observation Car, you cannot lock the door behind you. To maintain security, Amtrak veterans suggest closing your door and pulling the drapes shut when you are away so that your belongings are out of sight. While theft is statistically very rare on Amtrak sleeper cars, it is always wise to take small valuables (like your wallet or phone) with you and leave larger items like suitcases tucked away or covered with a blanket to discourage any "mischief" from passersby.