In this situation, cars turning along empty lanes will not affect the red color of the street on the map. More advanced systems will reflect the intersection in two colors
In this situation, cars turning along empty lanes will not affect the red color of the street on the map. More advanced systems will reflect the intersection in two colors. In this situation, cars turning along empty lanes will not affect the red color of the street on the map. More advanced systems will reflect the intersection in two colors.
WHERE ARE THE FIREWOOD?
Initially, traffic data was supplied by video cameras located on the city streets. Some of them automatically determined the flow rate, which facilitated the analysis of the situation. However, most of the work with the graphic diagram of traffic jams was performed manually. It is not possible to provide full coverage with this method, the system covered only the main thoroughfares and the streets adjacent to them. In this case, it is more reasonable to open access to the image from the cameras directly to users, this is much more visual than the three-color display on the map.
The task is simplified if flow scanners are installed along the roads, which transmit data on the speed and intensity of movement to the processing center: the automation really unloads a person.
Stationary traffic flow scanners are used in Moscow by the State Center for Traffic Management. The main task is the information support of a promising intelligent traffic control system throughout the metropolis. Therefore, the devices are mainly separated from traffic lights by tens of meters. There will be local benefits from the sensors: data on traffic congestion will be displayed on LED displays installed along a specific route and roads adjacent to it. The complex is not able to give a complete picture of traffic jams, but such a task is not worth it
Stationary traffic flow scanners are used in Moscow by the State Center for Traffic Management. The main task is the information support of a promising intelligent traffic control system throughout the metropolis. Therefore, the devices are mainly separated from traffic lights by tens of meters. There will be local benefits from the sensors: data on traffic congestion will be displayed on LED displays installed along a specific route and roads adjacent to it. The complex is not able to give a complete picture of traffic jams, but such a task is not worth it. Stationary traffic flow scanners are used in Moscow by the State Center for Traffic Management. The main task is the information support of a promising intelligent traffic control system throughout the metropolis. Therefore, the devices are mainly separated from traffic lights by tens of meters. There will be local benefits from the sensors: data on traffic congestion will be displayed on LED displays installed along a specific route and roads adjacent to it. The complex is not able to give a complete picture of traffic jams, but such a task is not worth it.
However, here the problem of completeness and reliability of information arises. After all, each street will require dozens of devices, which will make the complex truly golden.
The best method for collecting data is from motorists themselves who use cork services. While you are moving along the route, studying the traffic situation, GPS or GLONASS satellite positioning systems fix your location and track speed. Based on this information, the computer automatically creates a picture of street congestion. So the owners of mobile gadgets become both suppliers and consumers of information. This audience is constantly growing (of course, all data on customer movements is anonymous).
In order not to overload the memory of a portable navigator, traffic jams are displayed only along the route and in the immediate vicinity. Offering congestion bypasses, the device will not forget about the preferences of the driver who chose the shortest route or the fastest in the settings. By the way, navigators with the CityGID program that are not even connected to the Internet will help you to successfully drive around the city: data on traditionally problematic areas are sewn into the program and updated along with maps - electronic intelligence, when plotting a route, will take them into account
In order not to overload the memory of a portable navigator, traffic jams are displayed only along the route and in the immediate vicinity. Offering congestion bypasses, the device will not forget about the preferences of the driver who chose the shortest route or the fastest in the settings. By the way, navigators with the CityGID program that are not even connected to the Internet will help you to successfully drive around the city: data on traditionally problematic areas are sewn into the program and updated along with maps - electronic intelligence, when plotting a route, will take them into account. In order not to overload the memory of a portable navigator, traffic jams are displayed only along the route and in the immediate vicinity. Offering congestion bypasses, the device will not forget about the preferences of the driver who chose the shortest route or the fastest in the settings. By the way, navigators with the CityGID program that are not even connected to the Internet will help you to successfully drive around the city: data on traditionally problematic areas are sewn into the program and updated along with maps - electronic intelligence, when plotting a route, will take them into account.
Today, the information received from private owners, almost completely satisfy the needs of traffic jam operators. However, companies are insured by attracting partners with a large fleet of vehicles daily plying around the city. They not only provide instant data, but also collect statistics from certain sections: corporate machine routes are usually standard and repeat every day. They also use ordinary surveillance cameras, traffic police information and news feeds, as well as calls and messages from users. Changes reflecting the refined environment are manually entered into the traffic jam layout. Efficiency of data updating - a matter of minutes. So, CityGUID requests fresh news every 3 minutes, Yandex. Traffic - once every 2 minutes.
Data from different services may not match. Confirmation of this - screenshots of Yandex. Traffic and CityGID at one point in time
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However, driver assistance is difficult to overestimate
COLOR PICTURES
Information about traffic jams is transferred to an interactive map of the city. Some services indicate speed in different areas, but the colored lines are much easier to perceive: green - go with the breeze, red - look for detour routes.
Different types of streets make a certain difficulty. For example, 40 km / h is a luxury for a quiet street in the center of a metropolis and at the same time a working speed for most wide avenues. Logic suggests marking traffic situations on these city routes with different colors. However, in this case, the green single-lane lane will be slower than the parallel red line. Therefore, although some operators use gradation of urban routes, the difference in speeds when assigning levels is minimal. For example, Yandex. Traffic has about 5 km / h.
To obtain an objective picture on a specific site, the system compares the data of several gadgets and excludes those that are out of the picture - after all, someone stopped at a roadside store without turning off the application in a smartphone, another barely crawls along an empty street, looking for the desired house number, and the third and completely traveled around the dead traffic jam on the side of the road. The total congestion of city streets is indicated in points. For the zero level take the travel time of the route on the free streets.
Scheme of the cork service on the example of Yandex. Traffic
Scheme of the cork service on the example of Yandex. Traffic. Scheme of the cork service on the example of Yandex. Traffic.
LIST OF OPTIONS
As in the situation with cars, consumers tend to indulge in frills and additional functions. The most popular of them - laying a route taking into account traffic jams. To do this, you need access to the Internet using an external or built-in modem and a SIM card. Perhaps the most famous are the Navitel and CityGUID services. Garmin uses the information of a reputable and recognized source - Yandex, giving it in return information from its own users. In addition, the signal is received not via paid Internet networks, but via RDS / TMC radio channels. The coverage area with such a decision is more modest, but within the city it is not important.
The main problem of developers is laying and recounting routes. The system has to take into account many nuances, sometimes predict the situation for tens of minutes ahead or even see traffic jams on separate lanes of the road. The latter is important when passing intersections and intersections, where only a couple of rows of the highway are waiting for a turn, and the rest are free. The vector algorithm patented by CityGID takes into account not only the speed of movement, but also the direction. According to the developer, his navigation system paves the best route, winning up to 30% of the time for the driver compared to the traditional analysis method. Maps also report a lot of additional data pumped from the Internet, such as road repair work, accidents, placement of video cameras for violations and other nuances that affect the speed of movement. Fans of statistics will be offered archives of traffic jams or averaged indicators for a particular date and time of day.
