44results about How to "Solve traffic accidents" patented technology

The invention discloses a dual-layer glass fiber concrete pavement structure applicable to city roads. The pavement structure comprises a basic layer which is divided into an upper basic layer body and a lower basic layer body; the upper basic layer body is made from lean concrete; the lower basic layer body is made from cement stabilized crushed stone; a cement concrete face layer is laid on the basic layer, and a graded broken stone cushion layer is laid on the lower side of the basic layer; the cement concrete face layer is provided with dual-layer continuous glass fiber ribs and a supporting base, the dual-layer continuous glass fiber ribs are composed of upper-layer continuous longitudinal glass fiber ribs, lower-layer continuous transverse glass fiber ribs and lower-layer continuous longitudinal glass fiber ribs; transverse joints are arranged on the face layer at the interval of 150 m, and a pre-cut seam transversely penetrating a well cover is arranged on the well cover of the face layer; an emulsified asphalt slurry seal modified by styrene butadiene rubber latex is arranged between the upper basic layer body and the lower basic layer body; the basic layer and the face layer are provided with 2-3% road arch cross slopes. The pavement structure can effectively solve the problem that because a water system in a city road is rich or water drainage is not smooth, a pavement structure is seriously damaged in the early stage.

The invention provides an inter-vehicle communication method and device, used for solving the problem that a traffic accident happens easily due to the fact that the communication performance of a dedicated short-range communication DSRC technology can be suddenly decreased possibly when vehicle nodes in a congestion road section is relatively dense. The method disclosed by the invention comprises the following steps of: obtaining driving information of a target vehicle in the road, wherein the driving information includes the number of adjacent vehicles of the target vehicle and / or the communication quality parameters of the target vehicle and the adjacent vehicles; and a data transmission channel between the target vehicle and the adjacent vehicle is established through a vehicular Ad Hoc network; and, if determining that the road, in which the target vehicle is, is the congestion road section according to the driving information of the target vehicle, switching the data transmission channel between the target vehicle and the adjacent vehicles into the data transmission channel between the target vehicle and the adjacent vehicles established by a mobile communication system. When the communication performance of the DSRC is relatively poor, DSRC communication resources are preferentially distributed to vehicles having relatively rapid speeds; and thus, the problem that the communication performance of the DSRC in the congestion road section is poor can be solved.

The invention belongs to the field of roads and specifically relates to a road body with an anti-cold anti-freezing function. The road body comprises a damp-proof layer, a heat insulating layer, a heating cable layer, a pavement bed course and a pavement layer which are laid on a leveled and cleaned pavement base course successively from bottom to top, wherein the heat insulating layer is used for preventing downward transfer and loss of heat, and the pavement bed course is used for fixing and protecting the heating cable layer. The heating cable layer comprises multiple uniformly-distributed heating areas. There is a reinforcing fixing gap between two adjacent heating areas. A heating unit formed by cross arrangement of heating cables is at least arranged in each heating area. Each heating unit comprises four uniform heat areas formed by heating cable crossing. A temperature-sensing probe is arranged in at least one uniform heat area in each heating unit. According to the application, the icy pavement problem is thoroughly solved. By heating a pavement before the pavement is frozen, it is guaranteed that the pavement will not be frozen. Meanwhile, performance of the road body is raised, and the problem that performance of the road body is influenced and service life of the road body is shortened due to icing of the pavement is prevented.

The invention belongs to the field of road construction, and particularly relates to a road body construction method with a cold preventing function. The road body construction method comprises the following steps: 1, conducting a power-on test on heating cables to be paved before approach; 2, paving a damp-proof layer; 3, paving a heat insulating layer and a reflecting layer; 4, paving a heat dissipation layer; 5, paving a heating cable layer; 6, punching the reflecting layer, the heat insulating layer and the damp-proof layer: punching the reflecting layer, the heat insulating layer and the damp-proof layer from top to bottom corresponding to the clearances of the well distributed heating cables to form clearance cylindrical holes; 7, arranging temperature sensing probes: arranging hard sleeves among the paved heating cables, fixing the hard sleeves, arranging the temperature sensing probes in the hard sleeves, and electrically connecting the temperature sensing probes with a temperature controller outside the road body, and then blocking the ends, away from the edge of the road body, of the hard sleeves; 8, paving a road surface cushion layer; 9, paving a road surface layer. Through the adoption of the road body construction method, not only can road surface icing be avoided, but also the performance of the road body can be improved.

The present invention provides a traffic early warning method and system based on GPS. The method includes: periodically acquiring the position information of the first target and the second target; calculating the distance between the first target and the second target according to the acquired position information The actual distance between; compare the actual distance with the preset distance threshold, if the actual distance is not greater than the preset distance threshold, it is judged that the first target and the second target are within the preset Whether there is a possibility of collision within the distance threshold radius; if there is a possibility of collision, an early warning signal is sent to the first target and the second target; if there is no possibility of collision, no early warning signal is sent. The present invention further judges whether to send an early warning signal to remind both parties to pay attention to slow down or avoid by judging whether the routes of the two parties may collide when people and vehicles, or vehicles and vehicles approach each other, so as to achieve the purpose of safe travel.