Expected lifespan is generally an arbitrary number, these trains can be maintained to safe standards well past 30 years if the TTC wants to put in the work. The Scarborough derailment was due to lack of investment, not age.
I think we might have different definitions of arbitrary, but I agree that these trains do not necessarily need to be outright replaced and that maintenance may also be an option. The approach to the expected lifespan is an indication that the time to invest is close to now and can’t be postponed indefinitely
Expected lifespan is generally an arbitrary number, these trains can be maintained to safe standards well past 30 years if the TTC wants to put in the work. The Scarborough derailment was due to lack of investment, not age.
I think we might have different definitions of arbitrary, but I agree that these trains do not necessarily need to be outright replaced and that maintenance may also be an option. The approach to the expected lifespan is an indication that the time to invest is close to now and can’t be postponed indefinitely