The Metropolitan Transportation Authority (MTA) is taking steps to address a notorious bottleneck affecting train transit between Brooklyn and Manhattan.
In an unexpected move, the agency has issued a request for information (RFI) aimed at gathering insights from companies on how to enhance the DeKalb interlocking.
This particular area of track is known for creating significant delays as trains make complex maneuvers to transition between routes.
The DeKalb interlocking is a critical point where trains must navigate a chaotic arrangement of tracks, slowing down travel times considerably.
For instance, Q trains headed to Manhattan must merge with N train tracks and cross over D train tracks, while B trains moving toward Brooklyn face similar challenges as they navigate merging onto Q train tracks.
Currently, this intricate ballet of train movements is managed by MTA personnel utilizing outdated technology from a signal tower, rather than advanced computerized signals.
The MTA’s plans to modernize the interlocking come as it prepares to launch a contract for upgrading subway signals on B/D/F/M lines, which comprise sections of the Sixth Avenue and 63rd Street lines in both Manhattan and Queens.
The agency’s RFI is requesting industry ideas for modernizing the signal and train control systems, with a focus on implementing solutions that could simultaneously enhance the DeKalb interlocking.
By upgrading the signal system at this critical juncture, the MTA aims not only to alleviate congestion but also to improve overall rider experience by eventually extending the coverage of communications-based train control (CBTC) signals.
CBTC technology promises greater efficiency, allowing trains to operate in closer proximity and reducing the frequency of delays experienced by commuters.
However, the transition to CBTC at the DeKalb interlocking presents challenges.
Currently, N and Q trains are not equipped with this advanced signaling technology, complicating the integration of older and newer systems at the interlocking point.
To address these operational hurdles, the MTA is considering an alternative solution involving the installation of computerized track-switching controllers.
Utilizing automatic train supervision (ATS), this upgrade would automate the adjustment of switches within the interlocking, freeing personnel from manual oversight and enhancing efficiency in train movements.
By employing ATS technology, the MTA can ensure the smooth operation of trains using fixed-block signals during the interim period before the full modernization of the N/Q/R/W lines is completed.
The information collected through the RFI, which had a submission deadline of August 28, is expected to inform the MTA about the practical feasibility and cost-effectiveness of adopting these upgrades.
Sean Fitzpatrick, deputy chief of staff at MTA Construction and Development, emphasized the urgency behind this initiative.
He noted, “The main reason we put this out now with such urgency was to make sure we have the most cost-effective scope for the Sixth and 63rd project.”
By gathering this information early, the MTA hopes to incorporate the best approaches from the beginning to streamline processes and keep expenses down.
This proactive effort to modernize the DeKalb interlocking reflects the MTA’s commitment to improving reliability and efficiency across its subway system.
As the agency progresses with planning and implementation of signal upgrades, the anticipated improvements could potentially revolutionize travel for countless subway riders who face delays at this historical choke point.
The MTA’s ongoing commitment to enhancing transit infrastructure demonstrates its larger goals of keeping pace with technological advancements and meeting the needs of the city’s commuting population.
image source from：nyc
