Town has solely acknowledged two “important” disruptions in 2019, together with the July 19th incident in addition to one between March 21st and March 22nd. Nevertheless, there there have been a bunch of smaller incidents, and delays can produce chain results. The July 19th case led to 134 service adjustments on the No. 1 via No. 6 strains, and the glut of passengers switching to lettered strains created one other set of delays.
The problem could stem partly from utilizing older know-how. Solely the No. 7 and L strains have a contemporary Communications Based mostly Prepare Management system that makes use of telecoms to enhance positioning accuracy. They not solely stored working, they’re punctual over 90 p.c of the time. Upgrades to CBTC are nonetheless ongoing, however they’re anticipated to take years to finish. Locals could must threat these sorts of delays for some time but, and town is studying a tough lesson in regards to the dangers of automating mass transit when the know-how is not bulletproof.