Displaying 1 - 10 of 363

These filters apply immediately upon selection.
These filters require pressing "Search" to apply.

A Study Evaluating Audio- and Image-Based In-Vehicle Warning Messages in Work Zones Found a 16.4 Percent Reduction in CO2 Emissions Using Mixed Messages Compared to a No Message Scenario.

METHODOLOGY This study tested three scenarios: (i) work zone with no audio or image warning system (NO MESSAGE), (ii) work zone with a voice warning system (VOICE MESSAGES), and (iii) work zone with…
Content type
Date Posted
02/29/2024

Missouri DOT’s V2V-Enabled Truck Mounted Attenuator Leader-Follower System Was Estimated to Cost $301,485 Per Unit, Considering System Integration, Maintenance and Support, and Training Costs.

Protecting the safety of work zone workers is a priority for local and state transportation agencies. Advancements in technology, such as automated leader-follower vehicle systems for truck mounted…
Content type
Made Public Date
01/31/2024
Taxonomy (ARC-IT) Work Zone Management (MC06)

Pilot Implementation of Active Work Zone Awareness Devices at Seven Study Sites in Florida Increased Safe Driving Behavior by 44 Percent and Reduced Risky Driving Behavior by 43 Percent.

METHODOLOGY The data collection process utilized two devices: a smart sensor which records vehicle speed per lane, and a camera which is used to document traffic conditions, traffic signal…
Content type
Date Posted
08/31/2023

Missouri Study Indicated That the Leader-Follower Truck Mounted Attenuator (TMA) System Effectively Managed Gap Distance, with an Average Gap Distance Difference between Actual and Desired Being -3.21 Feet for Mobile Work Zones in Kansas City.

METHODOLOGY The field test of this system collected and analyzed 12 hours of data across two deployments on US highways outside of major cities in Missouri, one in the day (Kansas City District) and…
Content type
Date Posted
08/31/2023
Taxonomy (ARC-IT) Work Zone Management (MC06)

Consider Automating Weather-Related Messages on Digital Message Sign Systems, in Addition to Travel Times, Using Data from Environmental Sensor Stations.

Consider automating weather-related messages, in addition to travel times. This study clearly demonstrated that it is possible to automate the display of weather-related messages using Environmental…
Content type
Date Posted
08/31/2023

Michigan Digital Message Sign Study Reported an Installation Cost of $72,000 and an Annual Operation Cost of $2,300.

Digital Message Signs (DMS) (also referred to as dynamic message signs, variable message signs, or changeable message signs) are an important part of the Advanced Traveler Information Systems (ATIS)…
Content type
Made Public Date
08/31/2023

Evaluation of Existing Digital Message Signs in Michigan Revealed a 5.66 mph Reduction in Speed after Seeing the Weather-Related Message on Traffic Speeds.

METHODOLOGY Several field case studies were conducted to understand the effectiveness of particular messages and types of DMS, including weather-related DMS messages on driver speeds; exploring the…
Content type
Date Posted
08/31/2023

The Nine-Month Capital and Maintenance Cost for Driveway Assistance Devices in One-Lane, Two-Way Work Zones in Ohio Was Estimated as $20,700.

Cost Subsystem
Part-width construction methods are commonly used on suburban and rural two-lane roadways, which require one-way travel along a two-way corridor. This method, however, presents challenges at…
Content type
Made Public Date
08/30/2023

Use of Driveway Assistance Devices in Signalized Work Zones in Ohio Reduced Driveway Waiting Time by 46 Percent and Reduced Vehicle Speeds by 28 Percent Compared to Temporary Traffic Signals.

METHODOLOGY Video data were collected to collect volume, queuing, compliance, safety, and speed of vehicles within the work zone, both along the mainline and at the driveways. For two of the work…
Content type
Date Posted
08/30/2023