Median Acceleration Lanes a Mixed Bag

Guest Post by Max Moreland, PE, Director of Operations at Traffic Data Inc. Median Acceleration Lanes (MALs) are just what they sound like – an acceleration lane on the inside median. MALs are intended to allow left turning vehicles from the side streets, or U-turning vehicles on the mainline, to complete their turn without needing […]

Parking Case Study: Data Collection to Right Size Parking Lots

Savvy retail property owners are realizing many of their parking lots are too big and going unused.  One such property owner is Windamere, who hired our sister company Spack Consulting to assist them with determining how they could redevelop the Southdale Office Centre with additional buildings. In the past, we’d go through the laborious process […]

Local Data Proves Best Again – Trip Generation at Hotels

Guest Post by Max Moreland, PE, Director of Operations at Traffic Data Inc. A key initiative of Mike on Traffic and Spack Consulting is to actively share our traffic engineering data and knowledge with others in the transportation industry. Over the last several years we have shared our local trip generation data through TripGeneration.org and […]

The Age of Drones for Data Collection?

Guest Post by Bryant Ficek, PE, PTOE, Vice President at Spack Consulting. Looking through last Sunday’s ads, drones had a prominent spot for at least one store. Several versions were available from under $200 to $2,000 or more. Most included video cameras to provide great photos and/or videos. Since we currently use ground-mounted video cameras, getting […]

HCM 6th Edition: Roundabout Calculation Changes

The 6th Edition of the Highway Capacity Manual (HCM) is out and we (and others) would characterize it as an update as opposed to an overhaul. While this new manual does contain new and interesting items, we’ll focus on roundabouts for this article. HCM2010 was ground-breaking in the U.S. for providing a new methodology to […]

Black Friday Trip Generation at Big Box Retailers

Black Friday Retail Traffic is 2x a Normal Day’s Traffic Big Box Retailers

We collected trip generation data at four big box retailers in Minnesota over the Black Friday retail sale event in November 2015.  We also collected data at the same stores during a normal week during the winter in 2016. You can freely dig into the data at TripGeneration.org. Below are summaries of the peak hour […]

3 Ways to Improve Trip Generation Data in 2016

Trip generation data is at the core of how transportation professionals make traffic forecasts.  Do a search of my blog and you’ll see trip generation has been a recurring theme over the last nine years. ITE has been the broker/arbiter of trip generation data for 50+ years.  They did a wonderful job with 1960’s technology, […]

85th Percentile Speed Explained

A Deeper Look at Calculating the 85th Percentile Speed

Guest post by Jonah Finkelstein, EIT Spack Consulting The 85th percentile speed can be a confusing statistic for some to understand. The Minnesota Department of Transportation defines the 85th percentile speed as, “the speed at or below which 85 percent of all vehicles are observed to travel under free-flowing conditions past a monitored point.” Traffic […]