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Q-Free UK Traffic Data Collection, Vehicle Count and Classification, Weigh-In-Motion and Vehicle Weight Enforcement Systems


Q-Free UK is a part of the global Q-Free group of companies, a 24/7, global operation headquartered in Norway with regional offices worldwide.

As the Q-Free group’s Infomobility specialist, Q-Free UK provides a diverse range of intelligent transport system (ITS) products and solutions that supply traffic data to help tackle congestion, promote sustainable travel and support the delivery of national and local transport objectives.

The company’s products and solutions are robust, reliable and proven. Many bespoke solutions have been developed in collaboration with customers. Q-Free UK also offers support and maintenance services.

Bluetooth traffic monitoring systems

Q-Free UK was the first to market with a cost-effective and efficient Bluetooth-based alternative to traditional automatic licence plate recognition (ALPR) camera systems.

Launched towards the end of 2014, the HI-TRAC® BLUE2 is the second generation of this innovative product. It detects anonymous signals from travellers’ Bluetooth devices (both in-vehicle and in smart devices) to derive traffic journey time information. The HI-TRAC® BLUE2 can also derive origin and destination information and provide information on traffic movements. More than 1,000 systems have been supplied to customers worldwide.

By comparison with its predecessor, it offers increased processing power, increased storage and integration, and compatibility with other applications.

Traffic counters and classifiers

Q-Free UK offers a complete range of traffic count and classifying systems. It includes volumetric, loop-profiling and axle classifiers and non-intrusive counters/classifiers.

The products are low-powered, low-cost electronic systems, and are capable of monitoring up to 16 lanes of traffic.

The entry-level HI-TRAC® UTC system use Q-Free UK’s established loop and sensor technology, as well as the company’s Advanced Loop Profiling capability to detect mixed traffic, whilst recording other characteristics such as vehicle weight, classification, speed, wheelbase, gap and headway.

The HI-TRAC® EMU3, Q-Free UK’s third-generation event monitoring system, includes a 32MB flash memory, greater processing power and significantly lower power consumption.

High-end connectivity and storage is delivered by rack-mounted systems, in the form of the HI-TRAC® TMU range, which incorporates embedded Ethernet, VPN and FTP, as well as extensive 8GB data storage.

Cycle and pedestrian monitoring systems

The HI-TRAC® CMU uses established piezo-electric sensor technology to detect bicycles in dedicated cycle-ways or mixed traffic lanes, and an optional integrated pedestrian detection using either Passive Infrared (PIR) or above-ground detection.
Unique algorithms distinguish true bicycles from children’s scooters, prams, trolleys, mopeds and motorbikes, a major advantage over inductive loop-based detection technology.

Q-Free UK’s unique cluster detection technology accurately detects large volumes of cyclists, and can be interfaced at a signalised junction to provide a cycle priority phase. This provides an added safety benefit at busy junctions by removing the conflict between vehicles and cyclists.

Cycle information displays can be linked to the CMU and installed next to cycle paths to give Dynamic information (daily and cumulative figures) on paths’ usage by both cyclists and pedestrians.

Weigh-in-motion systems

Q-Free UK’s high-speed, low-speed and portable weigh-in-motion systems have been supplied to users in more than 50 countries.
Applications include asset management, bridge load monitoring, vehicle weight enforcement and virtual weigh-stations, all with the optional integration of ALPR technology.

High-speed systems are installed in the highway lanes. They use piezo-electric sensors or Linear Quartz sensors to accurately weigh and classify vehicles at normal speeds. Applications include pre-selection of vehicles for further inspection at enforcement stations.

Low-speed systems are typically installed with an axle weighbeam at off-road sites such as enforcement stations or in transport firms’ premises. Their high degree of accuracy means that they can be used to confirm gross and individual axle weights detected at high-speed WIM sites.

Sustainability solutions

Other new TDC initiatives include the Hi-TRAC® iGATE and the HI-TRAC® PM Roadside Particle Monitor. The HI-TRAC® iGATE is an intelligent gateway device that reduces communication costs by interfacing with multiple roadside monitoring systems.

The HI-TRAC® PM automatically measures airborne PM10, PM2.5, or TSP particulate concentrations at any roadside location. The remote sensor interfaces seamlessly with the HI-TRAC® iGATE to give real-time air quality information.

In addition, Q-Free UK is providing technical and statistical expertise to the EcoVehicle S!7219 Project. This will build on the Eureka Research and Development Project Footprint S!2468 by adding to existing measurement sites, investigating noise-measuring equipment, and developing a noise-emission index within the overall classification of vehicles, as well as a method for costing environmental noise.

Detailed information on our full product range and solutions can be found at our website.

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Press Release

Q-Free Awarded 25 MNOK Tolling Contract in North America

Q-Free has signed a 25 MNOK agreement with the US tolling system integrator TransCore.

White Papers

TDC – High-Speed Weigh-in-Motion

The Ministry of Transport for the Kingdom of Saudi Arabia is committed to improving road safety and protecting their bridges and highways from the damage caused by overweight vehicles.

Q-Free UK

30 Lynx Crescent

Weston Industrial Estate


BS24 9BP

North Somerset

United Kingdom

+44 1934 644 299 +44 1934 644 255

Q-Free UK Images

Products and Services


Press Release

24 August 2017

Q-Free has signed a 25 MNOK agreement with the US tolling system integrator TransCore.

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10 August 2017

According to a recent article by USA Today, based on a parking study performed by INRIX, American drivers devote an average of 17 hours a year searching for available parking on streets, garages, or lots and spend more than $20bn a year in garage fees, parking tickets and wasted fuel searching for a spot.

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6 July 2017

Q-Free ASA will present the second quarter results 2017 on Friday 14 July 2017 at 9:00am CET at Felix Konferansesenter, Bryggetorget 3, Oslo.

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22 June 2017

Unmatched ease-of-use and flexible screen-to-screen navigation, the Q-Free website now presents a user intuitive menu for visitors to effortlessly navigate our large ITS portfolio to find solutions for all of their ITS needs.

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8 June 2017

Q-Free has been awarded a new contract from Fjord1 for delivery of AutoPASS solutions for the Norwegian ferry connections Hareid-Sulesund and Magerholm-Sykkylven ('Sulapakken').

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28 May 2017

The world’s first zero-emission enforcement vehicle, which went live in the city of Bergen op Zoom, Netherlands, on 12 April, uses ARVOO’s rooftop-mounted cameras and Q-Free Netherland’s INTRADA Automatic Licence Plate Recognition (ALPR) software.

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21 May 2017

In Australia, Q-Free has successfully demonstrated the vehicle location capabilities of its current range of Cooperative ITS (C-ITS) systems.

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19 February 2017

Q-Free will be showcasing our large suite of class-leading ITS solutions at Traffex 2017, including our exciting developments in weigh-in-motion, vehicle counting, and classification and environmental monitoring.

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2 June 2016

TDC parent company Q-Free will be presenting our large suite of ITS products and services at Booth E10 to demonstrate how our integrated ITS solutions significantly reduce the number of road accidents, help raise revenues for infrastructure construction and upkeep, reduce congestion and pollution, and maintain quality of life.

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24 March 2016

Q-Free company TDC Systems will be exhibiting its range of products at Intertraffic Amsterdam at the RAI Amsterdam, Netherlands, from 5-8 April 2016 , with a 100m² stand that will showcase its complete ITS solutions.

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17 January 2012

TDC Systems has won a major contract for the supply of 20 high speed weigh-in-motion (WIM) systems for overweight pre-selection and enforcement.

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5 December 2011

TDC are proud to announce that they have been awarded the tender for the supply and installation of a Weigh-in-Motion system on the iconic Hammersmith Flyover, West London.

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1 March 2011

Leading designer and manufacturer of traffic data collection, traffic monitoring and weigh-in motion systems, TDC has launched a system which uses Bluetooth signals to obtain traffic journey time information and traffic movements. The Hi-Trac® Blue traffic impact analysis system can

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1 December 2006

The UK Vehicle and Operator Services Agency (VOSA), along with its partners - Civica and Applied Traffic, has won the Intelligent Transport Society (ITS) Technology Award for Excellence for their VIPER traffic intelligence solution. The award was made at the recent ITS World Congress he

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Regional Offices

TDC Systems Ltd. Malaysia

51-3 2nd Floor

Kompleks Udarama

Off Jalan Ipoh

Jalan 2/64A

50350 Kuala Lumpur



+60 3 4042 3618
Q-Free UK

30 Lynx Crescent

Weston Industrial Estate


BS24 9BP

North Somerset

United Kingdom

+44 1934 644 299 +44 1934 644 255
TDC Systems Ltd. Australia

5 Sara Grove







+61 3 9315 2088

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