ライドシェア vs 公共交通機関

The Rideshare vs Public Transit Comparator computes annual cost of relying on Uber/Lyft for daily transportation vs paying for public transit fares (monthly pass or per-ride) by your trip pattern. Public transit is typically 85–95% cheaper than rideshare for regular commute use — the 'convenience premium' of rideshare can exceed $5,000–10,000 annually for daily commuters. For occasional users (1–2 rides per week), rideshare is competitive or cheaper than transit pass. Average ride costs vary by city: NYC $15–25 typical Uber, $10–18 Lyft. SF/LA $18–30. Chicago $12–20. Smaller cities $8–15. Public transit fares: NYC $2.90 unlimited monthly $132. London £6.60 capped daily. SF MUNI $2.50 monthly $86. DC Metro $2.25 to $7 based on distance, monthly $89–192. Calculator multiplies trips per day × days per week × 52 weeks × cost per trip to annualize each option. The break-even point: roughly 3–4 transit trips per day matches one rideshare. So a daily commuter (2 trips/day × 5 days = 10 trips/week) almost always saves big with transit. A 'lazy weekend' user (4 trips/week of 1 mile each that don't justify transit complexity) may break even with $15 Uber rides vs $130 monthly transit pass that goes mostly unused. Beyond pure cost, several factors matter for the comparison: time (transit often slower for short trips, faster for long ones avoiding traffic), reliability (transit schedules vs surge-priced unpredictable Uber), comfort (private car vs shared/crowded transit), accessibility (transit gaps in suburbs and at night), and externalities (rideshare adds congestion, transit reduces emissions per person-mile). This calculator focuses on direct cost but the broader decision involves quality of life tradeoffs. For households deciding whether to own a car at all, comparing pure rideshare-or-transit costs (without insurance, parking, gas, depreciation of owned car) often reveals owning is the most expensive option for urban dwellers.

PrimeCalcPro provides professional-grade tools trusted by businesses and academics.

1. 1Step 1 — Enter your typical Uber/Lyft cost for the trip you'd take
2. 2Step 2 — Enter equivalent public transit fare (or monthly pass ÷ typical usage to get per-ride cost)
3. 3Step 3 — Enter trips per day (2 for round-trip commute; more if errand-heavy)
4. 4Step 4 — Enter days per week (5 typical commuter, 7 daily life)
5. 5Step 5 — Calculator computes annual rideshare = RC × TPD × DPW × 52
6. 6Step 6 — Computes annual transit = TC × TPD × DPW × 52
7. 7Step 7 — Outputs annual cost difference + recommendation

• !Using sticker price of monthly transit pass without dividing by actual rides taken (underutilized pass)
• !Forgetting weekend, errand, and social trip costs (rideshare quickly adds up)
• !Not factoring in time cost — transit can be slower, raising true cost when valuing time
• !Comparing only to rideshare cost without including car-ownership comparison
• !Ignoring quality-of-life factors (safety, comfort, predictability)