A freight train derailment near Reno, Nevada has left more than 20 railcars off the tracks, prompting a large emergency response and causing traffic disruptions along Interstate 80.The derailment happened just before 7 a.m. Friday near USA Parkway, about 20 miles east of Reno. Officials say between 20 and 25 boxcars were involved in the incident.Authorities report that no injuries have been confirmed, and there are no signs of hazardous materials being released from the derailed cars.However, the crash is impacting traffic in the area. Nevada State Police say at least one lane of eastbound I-80 is closed, and drivers should expect significant delays as crews work to clear the scene.The derailment is also affecting rail travel. Amtrak says its California Zephyr Train 6 route is experiencing delays due to the incident.Officials have not yet determined what caused the derailment, and it remains unclear how long it will take to fully reopen the area.Explore: NBCPalmSprings.com, where…..