Nov 15 2009

How much time in the NASCAR pits? (we use GPS tracking devices to find out)

We were lucky enough to get a couple passes for this weekend’s NASCAR event, to include pit passes to the garage & pits.

We had a couple of EZ-1000’s with us, and I want to show how easy it is to quantify how much time we actually spent in the pits (vs. the stands/box):

I first create a landmark called “PIR Pits” around the pits:

tracking activity in the NASCAR pits

tracking activity in the NASCAR pits

Then cut & paste the PIR Pits landmark into GPS Insight:

Paste a geofence into GPS Insight

Paste a geofence into GPS Insight

Paste here:

Paste geofences into GPS Insight

Paste geofences into GPS Insight

Confirm here:

Paste geofences into GPS Insight

Paste geofences into GPS Insight

Run a report here:

GPS Track of Pit activity at NASCAR using GPS Insight EZ-1000's

GPS Track of Pit activity at NASCAR using GPS Insight EZ-1000's

1.9 hours in the pits

1.9 hours in the pits

Except that missed the part where we went really close to the “inside the building” chatter from the GPS device, so I had to carefully re-draw the polygon to get a more accurate picture of the true time spent down there.

So even though we may pick up a little bit of false “in the pit” activity since it’s so close to the box/grandstand (with drift due to the device being enclosed), this adjustment to the “pits” will give a better representation of how much time was there:

Extend the boundary of the pits geofence to get all activity

Extend the boundary of the pits geofence to get all activity

While we get a couple of random “1 minute” visits which are inaccurate due to the EZ-1000’s “inside” drift, the 2.8 hours is much more accurate than the original 1.8 — both Brent and I spent half an hour in that remote area of the pits and it makes a big difference to the total amount of time in the report by accurately creating the polygon:

2.8 hours in the pits

2.8 hours in the pits

A fun (and loud) time was had by all:

NASCAR in Phoenix

NASCAR in Phoenix

And a favorite of mine, the RedBull 83 car:

RedBull NASCAR

RedBull NASCAR

I like this car so much I bought the $60 model for my bookshelf. Brian Vickers may have come in 38th today, but we drink a lot of RedBull and don’t have much use for Lowe’s in our office.

Rob.

Leave a Reply

You must be logged in to post a comment. Login now.