Project DetailsVezi galerie foto
An important component of any integrated system of traffic management at a city level is the sub-system of quantifying the number of vehicles transiting certain areas or circulating on the city’s arteries.
Trying to avoid inconvenience caused by the use of inductive loops, Direct One, in partnership with Syswin Solutions, implemented an innovative solution to quantify the volume of traffic at the level of an important intersection in Alba Iulia ( Bd. Revolution 1989 with Cloşca Str.), which uses LoRaWAN technology.
On each lane of traffic were installed in holes in the asphalt IoT sensors specialized in vehicle detection, thus significantly reducing the installation time compaired to the inductive loop solution. Also, the solution for the restoration of the road surface was an innovative one, using composite materials that allow the resumption of circulation within minutes of installation.
Considering the depth of installation of 20-40 cm and the lifetime of the sensors for 5 years, this mounting solution ensures the system’s independence from periodical restoration of the wear layer (inductive loops are installed at a depth of 2-4 cm, being destroyed in a scraping to remake the asphalt layer of wear).
Currently, the viewing interface provides information about the total volume of traffic during one day. With the next version, which will be available starting in mid-July 2018, the solution will provide, in real time, detailed information for each driving sense (even at the level of the traffic lane, thus allowing the municipality to be able to take decisions to optimize road traffic in the intersection/area concerned on the basis of actual field values.
Technical specificationsVezi galerie foto
To quantify the volume of traffic in the Bd. Revolution 1989 with Str. Closca, Direct One, in collaboration with Syswin, has installed an innovative solution for the detection and measurement of road traffic, at the level of traffic lanes, for the purposes of Entry into intersection on the 1989 Revolution Boulevard and on all traffic lanes on Closca Street.
The motor vehicle detection infrastructure, consisting of magnetic sensors, installed by burial in the roadway at a depth of ~ 25 cm, is net superior to the classic solution with inductive loops. The high burial depth eliminates the risk of degeneration, both in the case of seasonal snow-cleaning activities, as well as for the restoration of the wear layer.
From an operational point of view, the installation of a sensor is carried out within a relatively short time interval (~ 30 minutes), including the relocation of the asphalt layer, for which a cold mixture was used, with very short outlet time (2-3 minutes).
Communication technology is LoRA, each sensor being equipped with LoRA radio mode and a lifetime battery estimated at 5 years.
From a functional standpoint, each vehicle passing over a sensor increments a counter whose value is transmitted via a LoRA gateway to the central server in Bucharest every 30 minutes. Aggregate information in the central database is displayed in a Web application as a global traffic value from the current day. In the reporting module, users will be able to create customized reports, depending on their specific needs. The time granularity of the traffic volume measurement system is 30 minutes.
The benefits of this solution are addressed mainly to local administration: by extending across the whole city, the solution can facilitate the implementation of effective traffic management measures, based on precise, real-time measurements of the volume of traffic.