Railway commuters traveling between St. Louis and Chicago have yet to see faster rail journeys, despite most of the Amtrak corridor’s $1.95 billon upgrade concluding a year ago. Delays in installing and testing new GPS-related safety technology kept Amtrak trains from hitting high speeds of 90 mph during 2018, as the Illinois Department of Transportation originally projected, the St. Louis Post-Dispatch reported . Trains are not allowed to travel faster than 79-mph on the route. The Illinois agency projects that 90-mph speeds will be in place for Amtrak by the summer from Alton to south of Springfield. Most of the remainder of the route is expected to implement 90-mph speeds by the end of this year.