« Tire-Track Sharrows on MD-450 in Bladensburg. | Main | Temporary flashing signal on MVT »


Feed You can follow this conversation by subscribing to the comment feed for this post.

Looks like the crash data is wrong. They are likely showing cumulative total, not the totals for each year. I'm checking in with them.

I wonder what Alexandria's numbers look like.

I assume the wmata comparison is for operating costs recovery. Total cost recovery better for bikeshare than metrorail. .

All this and they still cheat them employees. i.e. they do not pay what they agreed to. Unless of course they are "friends" of the management.

This CO2 savings stuff is embarrassing. The mode replaced is generally walking, the bus, Metro, or taxi. Only foregone taxi rides save CO2 at the cost of some cab driver's livelihood.

There is some reduced driving. Survey results also show that CaBi membership has led to increased used of transit and decreased car ownership. It is not direct, that's true, but it's always hard to measure the counterfactual. But if you'd like to try to come up with a more accurate accounting, I'd run it as a post.

The most direct way to do this is estimate the amount of reduced car ownership (in number of cars) due to CaBi membership and multiply by that by the amount of CO2 generated by a car per year. This assumes that the car not being owned is driven the same amount as the average in the national fleet, which is probably not a good assumption.
In addition, one can estimate the number of taxi miles not driven because of CaBi and add that in.

AFAIK, the CO2 savings typically calculated assume that every bike trip (or non-recreational bike trip) results in a displaced car trip. This is certainly the case for the National Bike Challenge being run on Endomondo. I bike about 6000 miles per year and I would estimate that the amount of CO2 I don't emit because of biking is approximately zero.

I don't think there's a CO2 savings for displaced taxi trips, as the drivers will just sit and idle instead.

They should replace the CO2 savings with a measure of "cultural mulch" generated. People simply want to be in an environment with amenities like Bikesahre.

The comments to this entry are closed.

Banner design by creativecouchdesigns.com

City Paper's Best Local Bike Blog 2009


 Subscribe in a reader