Most transit systems have either a fixed or minimum fee. So it usually does not make sense to pay for public transit if you are just going a short distance. If

Most transit systems have either a fixed or minimum fee. So it usually does not make sense to pay for public transit if you are just going a short distance. If it were free, more people would use public transit for these short trips instead of walking or bicycling. Wouldn't this more sedentary life have a significant negative impact on public health? Studies seem to show that an additional 150-299 minutes of walking each week (20-40 minutes a day) can increase lifespan by 3.5 years [1]. [1] http://www.gizmag.com/physical-activity-live-longer/24972/ http://www.gizmag.com/physical-activity-live-longer/24972/