Slugging Statistics

I was trying to find a picture of an ad that I saw on the side of a Metro bus for slugging (Sidenote: I think that's hilarious. They're supporting a different form of commuting that's free and doesn't benefit them? I couldn't find a picture of it so I'll have to do some scouring on the road if traffic is bad one day) and I came across this slugging thread: http://www.city-data.com/forum/northern-virginia/855393-have-you-tried-slugging-do-you-3.html.

This is the excerpt that I found interesting:

"Total persons using the HOV lanes are 52,600 in the 6:30-9:30 a.m. time frame. In comparison, Metrorail carried 41,300 passengers across the cordon and VRE carried 4,310 passengers. The remaining roadways to the core area carry 87,280 people in 80,000 autos and 4,400 bus passengers during the 6:30-9:30 a.m. time period.

The Shirley Highway HOV facility is the best example in the region of a successful HOV operation. From 6:30-9:30 a.m. in 2002, the two HOV lanes carried a total of 31,650 people in 8,635 vehicles, compared to the four conventional lanes which carried 23,510 people in 21,310 vehicles. The Blue and Yellow lines of the Metrorail service in this corridor carried 16,700 people in the same time period.

That's an average of 3.7 people per vehicle in the HOV lanes, and 1.1 people per vehicle in the regular lanes."

 In summary, in 2002 the two HOV lanes stats from 6:30-9:30am on I-395 (Shirley Highway) were as follows:

HOV: 31,650 people in 8,635 vehicles
Regular lanes: 23,510 people in 21,310 vehicles.

That would be why the regular 395 lanes are usually so much more packed than the HOV lanes. Captain Obvious? Maybe. Still an interesting stat. And I'm not really a big stat person. My number of strike-outs in college was too far above what I'd have liked for me to be one.