Case study | Transportation Engineering
SmartSensor Advance/Wavetronix System Signal Upgrades
Missouri Department of Transportation
Missouri Department of Transportation
Kaskaskia Engineering Group, LLC (KEG) provided engineering design services for upgrades to 23 signalized intersections in St. Louis City, St. Louis County, St. Charles County, Jefferson County, and Franklin County, Missouri for the Missouri Department of Transportation. The intersections are located along major roadways and many do not have advanced inductive loop detectors installed that monitor the intersection dilemma zones. The Federal Highway Administration (FHWA) defines advanced dilemma-zone detection systems as systems that enhance the safety at signalized intersections by modifying the traffic control signal timing to reduce the number of drivers that may have difficulty deciding whether to stop or proceed through the intersection during a yellow signal phase.
Advance dilemma-zone protection may reduce rear-end crashes associated with unsafe stopping and angle crashes due to illegally continuing into the intersection during the red phase. In addition to an increased safety risk, unnecessarily extended green times can create inefficient signal operation, which reduces the operational capacity of the signalized intersection.
The purpose of this project is to reduce the risk of intersection crashes, as well as to increase intersection operational capacity by the installation of continuous tracking advance detector systems at the signalized intersections. This innovative project is only the second project for which the St. Louis District has utilized the Wavetronix system.
KEG prepared the memorandum for proprietary use of the Wavetronix system. The proprietary use memorandum was reviewed and approved by MoDOT. KEG’s engineers also prepared the preliminary design report, which detailed the installation and operation of the advanced detector systems.
The preliminary design report was submitted to MoDOT in March 2014 and was approved in April 2014. KEG also oversaw and managed the development of the engineering plans and job special provisions for the installation of the advanced detector systems for the 23 signalized intersections. The project was let in a June 2014 MoDOT letting and construction of the improvements began in 2015.
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Bohdi is a Golden Retriever whose hobbies include ripping up clumps of grass in his yard, sneaking tomatoes from the garden, and playing tug of war. He loves learning new tricks and snuggling after a long day. As you can tell by the picture, Bohdi also enjoys sipping pumpkin spice lattes and roaming the aisles of Target.
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Brody is a golden doodle. He loves cats and to run free, but also likes to be lazy most of the day and take naps on the couch. Absolutely hates baths, swimming, etc. Brody would much rather enjoy any human food rather than eat his food or treats.
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Maggie is a high-energy Staffordshire Terrier/Hunting Dog mix that was adopted from the shelter in 2017. She loves regular trips to play in the woods. She works full-time guarding the Belleville office, but was almost fired her first month after electrocuting herself while unplugging some conference room equipment.
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Maggie & LeoMatt Masterson
Maggie is a 6 year old half Weimaraner, half Australian Sheppard mix. She is a smart, energetic, and fun-loving dog who enjoys chasing squirrels and large flying insects (like bees and horse flies). She likes to shake hands for treats, wrestle and chase her human brothers, and go for walks. Leo is an 11-year-old Goldendoodle who was a perfect fit for the Masterson family late in his life. He is full of energy and love, and is a total sweetie to anyone he meets.
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Greta & TilleyMatt Masterson
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