Traffic data ­ acquisition systems

Data gathering

In times of minimal rates of change in annual traffic development, the monitoring and classification of road traffic with accuracy class A1/300m in accordance with TLS 2012 is becoming increasingly important. Traffic Data Systems was the initiator of the 8+1 classification and the first manufacturer to offer detectors/classifiers with a valid A1/300m certificate by the German Federal Highway Research Institute (BASt). The high accuracy is based on powerful algorithms and modern pattern recognition techniques which are used to evaluate vehicle signatures (traversal curves for vehicles over inductive loops). In addition to the storage of long-term and single vehicle (vbv) data, these can of course also be transmitted to sub-centres along with short-term data.

TMCS-IP

The TMCS-IP (Traffic Monitoring and Classification System) is a complete TLS (technical delivery requirements for route stations) remote monitoring station with integral function group FG1 (traffic monitoring/classification with inductive loops), optional FG2 (weigh-in-motion), optional FG6 (operational messages and control) and optional control module in compliance with TLS 2012.

All data versions for short-term, long-term and single vehicle (vbv) data according to TLS 2012 for 8+1 vehicle classification are supported (incl. 5+1 and 2+1). Additions for the transmission of vehicle data with SWISS 10, DK15 and NorSIKT (Level 4) classification have been defined and are already implemented.

The TMCS-IP can be connected to a field bus modem for top-hat-rail mounting via an RS232 connector, operated as an EAK (loop detection and classification unit, FG1) on a control module via an RS485 interface, or can communicate with a TLS sub-center via the integral modem (4G/LTE) or ethernet interface using TLS-over-IP. A touch display with a resolution of 800 × 480 pixels is provided for easy configuration and function checks and a PROFIBUS® interface is available as an option.

The third generation of TMCS-IP loop detectors are distinguished by their compact and modular design. Up to eight detector modules for double loops (16 channels) can be accommodated in the IP67 TMCS-IP enclosure.

As a result of the mode of operation with fixed loop frequencies, the frequency bandwidth required for fault-free operation of the inductive loop/detector combination is small, particularly compared with frequency-agile detectors which monitor vehicles based on frequency modulation.

The real-time modules can be operated with different loop geometries and cable lengths between the TMCS-IP and loop of more than 600m and the loops with a permissible resistance of more than 50Ω. Tuning and sensitivity adjustment are carried out automatically. Possible faults in the loop circuit (breakage, short-circuit) are continuously monitored and appropriate alarms transmitted to the central control center.

General Information

Along with the TMCS-IP, the TDS 820R and TDS 821R systems, which have been in operation since the beginning of the 1990s can also be brought up to the latest state-of-the-art and connected using modern detectors/classifiers and communications media (4G, AUSA, fibre optic cable).

Technical specification

Our systems are available as a stand-alone FG1-EAK with various interfaces. The function group FG1 outputs interval-controlled short-term and long-term traffic flow data, which can be parameterised from a sub-centre via a remote connection or on site.

TMCS-IPTDS 821-RTDS 821-U
Lanes1 to 81 to 81 to 8
8+1 (TLS 2012) classifier
SWISS 10 classifier
DK 15 classifier
NorSIKT (Level 4) classifier
Colour touch displayoptionaloptionaloptional
LED matrix
Continuous meassurements
Fixed loop frequencies
Feeder cable (incl. Telephone cable)≥600m300m300m
4G modem (LTE)
NarrowBand-IoT modemoptional
SIM card (front accessible)
SD card (front accessible)
Function group 1 (FG1)
Function group 2 (FG2)optional
Function group 3 (FG3)optionaloptionaloptional
Function group 6 (FG6)optionaloptionaloptional
Control module (SM)optionaloptionaloptional
FG1 std/ltd DE block (79)
FG1 vbv DE block (63)
TC57/TLSoIP
RS232 interface
RS485 interface
Ethernet interface
WIM-DSP interface
USB-A interface
USB-C interface
Profinet interfaceoptional
Power supply 24VDC (±20%)
Power supply 5VDC to 24VDC
PoE power supply
Integrated UPS (Li-Ion battery)optionaloptionaloptional
Battery buffered RTC
Temperature range -25 °C/+75 °C
Protection class IP67
Hat rail module
Dimensions in mm315 x 150 x 593HE/8TE3HE/8TE
63TE rack
84TE rack
Mean power6W6W6W
BASt approval (A1/300m)in preparation

TLS = technical delivery requirements for route stations
Function groups in accordance with TLS 2012
Control modules in accordance with TLS 2012


Subject to technical changes. Special solutions for individual projects possible.