Iowa, United States
Content that references this location
Iowa Truck Parking Information and Management System (TPIMS) Evaluation Found HOS Violations Declined by 40.7 Percent After Deployment.
METHODOLOGY
The evaluation used multiple data sources and performance measures to assess Iowa TPIMS utilization, reliability, and safety impacts. Data sources included (i) fine-grained parking flow…
Content type
Date Posted
07/28/2026
Geolocation links
Generative AI–Powered Road Weather Drive Assist System Received 88 Percent User Satisfaction for Ease of Use and Actionable Insights Based on Eight Users’ Feedback.
METHODOLOGY
CARWIS interface was composed of four specialized AI experts, including the Drive Assistant, Winter Expert, Live View Expert, and 511 Data Expert, designed to deliver targeted, real-time…
Content type
Date Posted
02/26/2026
Taxonomy (ARC-IT)
Personalized Traveler Information (TI02),
Weather Information Processing and Distribution (WX02)
Geolocation links
Sixty-six percent of drivers changed their route following information provided by Iowa 511 system.
Survey Methodology:An online survey questionnaire was delivered to current Iowa 511 users and Iowa DOT employees. Survey questions addressed the sources for obtaining information on road construction…
Content type
Date Posted
03/29/2016
Taxonomy (ARC-IT)
Traffic Signal Control (TM03),
Connected Vehicle Traffic Signal System (TM04),
Traffic Information Dissemination (TM06)
Geolocation links
Sequential Dynamic Curve Warning System reduces the number of vehicles exceeding the speed limit by 10 mph or more by 27.8 percent
Methodology12 treatment sites and 24 control sites in Iowa, Missouri, Texas, Washington, and Wisconsin were studied. The system was installed at each site during the summer of 2012. The installed…
Content type
Date Posted
02/09/2016
Geolocation links
Dynamic Speed Feedback Signs on Curves cuts number of single-vehicle crashes nearly in half.
Methodology
The 7 participating states (Arizona, Florida, Iowa, Ohio, Oregon, Texas, and Washington) found 51 viable sites with an existing speeding problem. Signs were installed at 22 treatment…
Content type
Date Posted
12/07/2015
Taxonomy (ARC-IT)
Autonomous Vehicle Safety Systems (VS01)
A simple decision tree model was preferred over more complex regression and neural network models when predicting winter road weather conditions in Iowa.
Data Governance is very important
Alongside the development of the algorithm, a user-interface was developed to communicate information produced by the algorithm. During testing, it was discovered…
Content type
Date Posted
05/06/2019
Taxonomy (ARC-IT)
Infrastructure Monitoring (MC09),
Weather Data Collection (WX01),
Spot Weather Impact Warning (WX03)
Geolocation links
