Why does Metro use 40 foot buses? Or run small buses on some routes?
This is a recurring question. Residents look out their window during midday, weekend or evening hours and see a small number of passengers scattered through a 40 ft. bus. The bus they see looks like a needlessly expensive way to provide transit service, and a ‘small bus’ feels like the right sized package.
The simple answer to the question is that our ridership is too high; ridership during the peak exceeds the capacity of small buses.
Transit systems in general, including Metro Transit, tailor their fleets to meet peak hour needs. The average ridership per hour in Madison is over 30 passengers per hour, making us the envy of our peers. During the AM and pm peak hours, we have standing loads on core routes and commuter routes.
Then why not run small buses during other times? Wouldn’t that save money?
No, not necessarily.
The main cost of putting a bus on the street is driver wages. The skills needed for driving a bus - safety, customer-orientation, judgment, reliability - are the same regardless of the size of vehicle. Wages would not be lower for small bus drivers. And swapping out the big bus for the little bus after the AM peak, and then back again in the afternoon will increase labor costs due to the put-of-service time spent driving buses to and from the garage.
There are other added costs to small buses; you not only have to purchase buses that are only used part of the day, you also have to buy insurance for two vehicles instead of one, and keep parts on hand for another type of vehicle.
A further complicating factor is the federal regulation concerning spare ratio. The Federal Transit Administration (FTA) provides 80% funding for vehicles, and regulates the fleet size they will fund.
The FTA will not fund a duplicate fleet that allows changing buses off due to fluctuations in ridership over the course of the day.
A transit system is allowed a 20% spare ratio. Out of this spare ratio we need to accommodate buses out of service awaiting parts, buses damaged in vehicular accidents, buses held out of service for the day to allow for routine maintenance and repairs, buses in reserve to replace vehicles that encounter mechanical problems on the road, etc.
These negatives outweigh the slight savings in fuel cost of operating a small vehicle.
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