Systems Toll Dynax® Treadle System
DYNAX® Treadle System
IRD Treadle Systems Introduction
International Road Dynamics' DYNAX Treadles are speed independent axle sensing systems that consist of sensors mounted in a metal insert. The metal insert is installed directly into a treadle frame in the road surface. Removable clamping bars secure the DYNAX Sensors. This design eliminates the need for subsequent roadway excavation to replace sensors, making it ideal for use in toll and traffic monitoring applications where minimizing downtime is critical. IRD DYNAX Treadles are unique due to their modular construction. The sensors are independent of each other and the treadle insert/frame. Should one sensor fail; only one sensor must be replaced. IRD has a wide array of treadle models, including single, two, three and four sensor models. IRD offers two different treadle designs: conventional two-piece construction and single unit construction (Unibody). Conventional construction consists of two pieces, the frame and the insert, while Unibody construction combines the frame and insert into one high strength steel frame.
- DYNAX® Treadles - for toll roads (pdf - 192 kb)
IRD Conventional Treadles - Ideal for retrofit installations
IRD Conventional Treadles are available in models 8 ft or 10 ft wide and 2 or 4 contacts. Conventional treadles are designed for axle detection and counting on a roadway, regardless of vehicle speed. Two or four replaceable DYNAX® Axle Sensors per lane are employed to detect directional movement and provide highly accurate data. The treadle unit may be installed into existing frames.
IRD Unibody Treadles - Combined Frame and Insert
IRD Unibody Treadles are available in models 8 ft or 10 ft wide and 1 to 4 contacts. Unibody Treadles are designed for axle detection and counting on a roadway, regardless of vehicle speed. One to four replaceable DYNAX® Axle Sensors per lane are employed to detect directional movement and provide highly accurate data. The Unibody Treadle is a single unit system comprised of treadle frame and clamping bars, and is specially designed to provide for a shallow depth and low profile installation.
Single/Dual (S/D) - Tire Sensor
The IRD DYNAX® Single/Dual (S/D) Tire Sensor is durable and reliable, using force sensing resistive technology to determine single or dual tire groups on vehicle axles. The sensor operates independent of vehicle speed and in stop-and-go traffic. The Single/Dual Tire Sensor can be used alone or in conjunction with IRD Treadle Systems and interfaces to the Singe/Dual Logic Card. When used in conjunction with IRD treadles, the single/Dual Tire Sensor will provide additional classification information that can be used in pre-classification and post-auditing situations, increasing the accuracy of the classification system.
- AS-600 Series Single/Dual Tire Sensor (pdf - 70 kb)
(PDF files require Adobe Reader)
