Exploring Alternative Intersections

Guest Post by Bryant Ficek, PE, PTOE, Vice President at Spack Consulting. For many of our studies, stop signs, traffic signals, and roundabouts supply the necessary capacity and acceptable operations. Sometimes, though, we handle projects that require innovative thinking and lead us toward consideration of alternative intersections. Alternative in this case being defined as not traditional […]

New HCM Methodology for Work Zone Alternatives

Applying Capacity Reductions to Account for the Effects of Work Zones

One of the more significant additions to the new 6th Edition of the Highway Capacity Manual (HCM) are equations to account for the effects of work zones.  Based on NCHRP Report 03-107, reduction factors have been developed to reduce capacity, free flow speed, and saturation flow rates in four of the analysis modules. Several state […]

New Traffic Corner Tuesday Webinar Schedule

Last fall we introduced a new webinar series called Traffic Corner Tuesday. These free, 30-minute webinars are held by our senior engineering team and focus on sharing our traffic engineering best practices. The fall sessions were so popular that we have released a new schedule of webinars for 2017.  Join Bryant Ficek, PE, PTOE, Vice […]

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 […]

City of Albuquerque Tests Walkability Improvement

Over the past ten years, there has been a renewed interest in urban revitalization by many cities. The goal is to drive new economic opportunities in the heart of their downtown areas. At the same time, this renewed interest in the downtown areas has challenged the previous “auto-centric” design of the transportation systems that focused […]

Crash Analysis: Intersection Crash Rate

Guest post by Jonah Finkelstein, EIT Spack Consulting With the definitions discussed in Crash Analysis Definitions, we can now look into some of the tools provided by the Minnesota Department of Transportation (MnDOT) to help analyze crash rates around the state. This blog post will focus on MnDOT’s tool for intersection crashes known as the […]

Improving Pedestrian Crossings Case Studies

Pedestrian Crossings on a Corporate Campus and at a Grocery Store

A company’s greatest resources are generally its employees and its customers. While much emphasis is placed on providing customers with an exceptional product or service and providing employees with benefits that enhance their overall experience, it is important to not overlook the everyday elements that contribute to customer and employee satisfaction. The last thing any […]

4-Way Stop vs. Roundabout – MythBusters Experiment

MythBusters set up an experiment to determine which intersection works better – 4 Way Stop Signs or Roundabouts – check out the ten minute video below. Experiment Setup In a parking lot with barrels Single lane approaches at four legged intersection Show driver which way to go (left, through, right) as they pull up to the […]

Strict Speed Limits – Ignoring the 85th Percentile

Australia’s Take on Speed Limits

Guest Post by Bryant Ficek, PE, PTOE, Vice President at Spack Consulting. We’ve previously examined the 85th percentile speed and how it is used in Minnesota and many other places to set the speed limits on roads. Essentially, we take a survey of existing speeds and set the road speed limit at the point 85 percent […]

Crash Analysis Definitions

Guest post by Jonah Finkelstein, EIT Spack Consulting Driver and pedestrian safety is one of the most important considerations during planning and evaluation of a roadway network. A crash analysis is an integral part of a safety analysis and are often completed at intersections and corridors. The crash analysis can help assess concerns and help […]