Union Pacific Increasing Train Speed Through Marion, Goreville and Buncombe, Ill.

Omaha, Neb., May 15, 2006 – Union Pacific Railroad will increase the speed of its trains to 49 mph on the rail line operating through Marion, Goreville and Buncombe, Ill.

Train speed will be increased five miles per hour on May 25 and nine miles per hour on June 1, when the new maximum speed limit is reached. Trains currently operate through these southern Illinois communities at 35 mph because of track and operating constraints. Recent track improvements permit higher speeds.

Union Pacific has raised train speeds through several communities following necessary highway/railroad grade crossing signal modifications and has found that not only do the trains operate more efficiently, but motorists are not stopped at the crossings as long.Union Pacific Corporation owns one of America's leading transportation companies. Its principal operating company, Union Pacific Railroad, links 23 states in the western two-thirds of the country and serves the fastest-growing U.S. population centers. Union Pacific’s diversified business mix includes Agricultural Products, Automotive, Chemicals, Energy, Industrial Products and Intermodal. The railroad offers competitive long-haul routes from all major West Coast and Gulf Coast ports to eastern gateways. Union Pacific connects with Canada’s rail systems and is the only railroad serving all six major gateways to Mexico, making it North America’s premier rail franchise.

For further information, contact Mark Davis: 402-544-5459

The statements and information contained in the news releases provided by Union Pacific speak only as of the date issued. Such information by its nature may become outdated, and investors should not assume that the statements and information contained in Union Pacific's news releases remain current after the date issued. Union Pacific makes no commitment, and disclaims any duty, to update any of this information.