SEPTA has implemented an escalator modernization program as a way to upgrade sixteen existing escalators to a level of safety, durability and aesthetic appearance rivaling a completely replaced escalator.  Modernizing these devices helps increase the customer experience at our stations and provides a reliable alternative to regular stairs.   Workers moving new escalator parts into place at stations. The principle distinction between modernizing and replacing an escalator lies in what crews do with the steel truss.  A steel truss is a hollow metal structure that bridges together the upper and lower portions of an escalator.  In a replacement, the existing steel truss would be removed and a brand new one put its place.  This translates into a very labor-intensive activity.  During the modernization process, the original steel support truss is instead kept in place after being inspected to ensure there are no structural defects.  Since all the escalators involved in this project are housed indoors, the chance of the steel’s integrity being compromised is significantly low.   A partial view of an escalator housing being assembled. Deciding to modernize an escalator is a cost-effective solution for SEPTA.  Installing a completely new device involves a cumbersome construction process that would add more time, manpower and money to the project, not to mention the possibility of constructing additional structures underneath the ground of the escalator – further increasing the time the escalator might be out-of-service. The new steps are getting installed on this elevator at Norristown Transportation Center. Typically, modernization of escalators will include the following major upgrades: Replacement of both the upper and lower escalator modules containing the motors driving the device and electronics monitoring the escalator’s operation.  These modules are pre-assembled in a factory and are easily dropped into the existing landing The addition of all-new steps and handrails with modern safety markings Installation of modern Programmable Logic Controllers to operate and monitor all escalator control equipment Modern safety features like a ‘deteriorated roller detection’ device.  When the moving rollers in the escalator housing wear beyond a safe limit, this device brings the escalator to a slow and safe stop so it can be inspected Remote monitoring units to record operational activity of the escalators.  All diagnostics will be remotely monitored by our Control Center.   The control module of an escalator before it is installed under one of the escalator landings. SEPTA has already begun the modernization of its escalators at Norristown Transportation Center, Olney Transportation Center, 30th Street Regional Rail Station and Pattison Station on the Broad Street Line. The anticipated return of these escalators to service is March 2008.  Once completed, modernizing the escalators at Suburban and Market East Stations escalators will begin.