If a particular action or stance is considered good policy in times of great need, might it be understood that in times of “less immediate need” that very same action should be viewed as a useful utility? The TLC has once again taken the step of allowing multiple fares in taxis as part of a stop gap measure, while the MTA recovers from the devastating effects of Hurricane Sandy.
If you can remember back to the MTA strike of 2005, the transportation authorities teamed up to create a solution that worked in times of real need. It seems to me that if you are inclined to turn to these measures when the situation is most dire, as a governing body, you have weighed the pros and cons of the particular decision and have deemed it to be, on balance, of great and immediate value. So it stands to reason that if you are willing to implement a cab sharing system during times of great need, it would be reasonable to consider such actions during more regular times as well.