This product is not currently available. For more information, including distributor inventory, please contact us.

View products below to see detailed pricing

This product is not currently available. For more information, including distributor inventory, please contact us.


The RoadTrax BL Piezo Traffic Sensor is available both as a Class I (weigh in motion) and Class II sensor (counting, classifying, toll booths, red lights, etc.).
BL traffic sensor

The unique construction of the sensor allows direct installation into the road in a flexible format so that it can conform to the profile of the road.  The flat construction of the sensor gives an inherent rejection of road noise due to road bending, adjacent lanes, and bow waves of approaching vehicles. The small cut in the road minimizes the damage done to the road, speeds up the installation and reduces the amount of grout used for the installation. The RoadTrax BL sensor is available both as a class I sensor for the highest level of uniformity needed for weigh in motion applications and as a class II sensor which is more cost effective for counting, classifying, high speed toll booths, speed detection, and red light cameras.


TE’s RoadTrax BL axle sensors are made with our unique PVDF (piezoelectric) cable for dynamic road traffic monitoring. Highly accurate for speed and classification, robust, low cost, easy to install, and offering a great signal-to-noise ratio, these sensors offer tremendous value.


  • Great signal
  • Easy to handle
  • Easy Installation
  • Quality
  • Durability
  • Great passive cable
  • Versatility
  • Customer support

Key Specifications

  • Center Core: 16 gage, flat, braided, silver plated copper wire
  • Piezoelectric Material: Spiral-wrapped PVDF Piezoelectric film with a nominal Piezoelectric Coefficient of 34 pC/N
  • Outer Sheath: 0.016” thick brass, CDA-260, ASTM B587-88
  • Final Dimensions: 0.260” wide x 0.063” thick; 0.005”
  • Passive Signal Cable: RG 58 type with an underground/direct burial rated outer jacket. The OD of the cable is 0.187” (4.75mm). The nominal capacitance of the cable is 27 pF/ft (89pF/m).
  • Brackets: Two sizes of installation brackets are included with the sensors, 3/4” (small) brackets and 1” (large) brackets. There is one small and one large bracket per 6” (150mm) of sensor length.


Please review product documents or contact us for the latest agency approval information.  

Product Type Features


  • Cable Length (m) 50

  • Cable Length (ft) 100, 150, 200, 250, 300

  • Sensor Length (m) 3.5

  • Sensor Length (ft) 10, 11, 12, 6, 8

Reference Number

  • TE Internal Number CAT-TRA0001

Related Materials

Datasheets & Catalog Pages

Product Specifications