Aldonius' fare system

[aldonius]

Structure, Product, Ticketing as per Ozbob.

Levels

Ozbob has floated the idea of greater per-zone components for long trips and Tramtrain has stated the difficulty of picking a good slope.

As such I present an exponential-based system. Google Docs link here.

I picked $1.50 for a single zone journey and $23 for a 23 zone journey without a heck of a lot of thought.
Overall rationale: maximise short & offpeak (including weekend) usage without the rorting available under the current system.



Shoulder peak (75% of peak) applies to touch offs 05:30-07:00 and touch ons 18:00-19:00. Credit to Tramtrain for the AM.
Offpeak (50% of peak) times are: on after 9:00 off before 15:00, on after 19:00 off before 05:30.

Yearly increases in a 1x to 2x CPI band. Credit to RTT_rules.

Capping: at 3 paid journeys per day. You can have your fancy percentage loadings, this captures the average use case of two peak journeys and another smaller one.

Concessions

Full time students of all ages, seniors, disabled veterans, health care card holders.
All receive a standard 50% (of peak adult pricing) at all times.

Under 5s free at all times (with accompanying fare-paying passenger), under 14s on weekends & public hols, again with accompanying fare-paying passenger.

Additional freebies ie veterans on ANZAC day as required.

[ozbob]

Thanks! 

[#Metro]

I like the whole exponential thing. As I think this exercise shows, fare policy is bloody hard!

[somebody]

I like the whole exponential thing. As I think this exercise shows, fare policy is bloody hard!

I can't say I'm a fan.  It creates a disconnect between the distance travelled and the fare.

[Fares_Fair]

Very high marks for the graph from me !

[SurfRail]

I think the $10 point should be at around zone 14 for my own part.

[aldonius]

Simon - good point, it's the primary disadvantage of the exponential. Same percentage increase at the top end, but big absolute increase.

SurfRail. It's almost 3/4 that with my original numbers!

What I get out of this is that a somewhat shallower curve is needed.
I'll think about ways to achieve that with other curve equations.

[aldonius]

Holy Mother of Thread Necromancy!

...

I've had a new idea for capping/structure. Charge for the eight (or whatever) most expensive trips per week.
Probably impossible to implement with the current infrastructure though.

Also, another hurrah for the exponential: you can actually apply percentage increases consistently and equally.