Thought it would be fun to come up with a mathematical formula for much of what I'm reading in this forum.
Part of the reason I want to come up with this is to analyze why I'm having a hard time going more car-light or car-free.
This may be useless and completely bias to me or maybe it can be tweaked to be more applicable to a wider audience but here goes:
These are the variables I've gleaned from threads and thought up: (range for all is >=0, except weather)
A = Money saved in cutting automobile expenses (gas, insurance, registration, maintenance, traffic tickets, parking)
t = Traffic (stress reduced by not driving)
D = Distance or Time spent commuting to primary daily location by bicycle
d = Distance or Time spent commuting to secondary locations (groceries, gym, friends', lessons)
I = Monthly Income
N = Number of children or dependents
g = INABILITY for indepedent mobility of children and dependents eg. too young/old or infirm.
H = Health/Fitness
S = Previous cycling experience/skill
F = Fun derived from biking
P = Pride or endorphins released (good feeling) from being a carfree advocate/different lifestyle
B = Fear/traffic dangers/safety of neighborhood
W = Weather at given season (range is -infinite to +infinite and subjective to you, maybe u like rain)
r = Risk of bicycle theft
e = Existing clothing and equipment for cycling suitable for given weather
L = Laziness (and poor time management)
T = Quality of public transit and taxi service
M = Weight of backpack, stuff you have to lug around
C = Additional time spent (over car) cycling, locking up, getting dressed
I don't konw whether or not I should include, X = Bicycle friendliness of city (urban planning, bike racks and bike routes), into the function. Also, Y = Support network (this forum and other like-minded people), dunno if I would include this as a variable either.
Carfree living = A + t - D - 2d - r + T + H/0.4M + (2F*S*e)^W + 1.5P + B/S
L*C + I + N^g
I'd say some of the constants depends on yourself.
Edit: Ooops. the relationship with weather is messed up. Let me see if i can fix that