Method and system for lane change of self-driving car.
Publication Date: 2016-Jan-06
The IP.com Prior Art Database
A program is disclosed by which the participating vehicles will communicate with each other to create a temporary “cross lane” path so that vehicle can change the lane without shopping any vehicle in the ecosystem. Vehicle to be changed lane, will communicate initial angular movement, velocity etc. and accordingly Cloud server will automatically calculate the clearance required to move the vehicle. The participating vehicles will create additional spacing for cross the lane, software will decide which vehicle to reduce speed and which vehicle to increase speed to crease sufficient clearance. The vehicle to change the lane will calculate the speed dynamically and will cross the lane with the newly calculated speed. This method and system will ensure autonomous vehicle can cross the lane smoothly without any possibility of collision or accident.
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Method and system for lane change of self -driving car.
Self-driving vehicles are already in place, in future many vehicles will be self-driving vehicle, in a highway multiple vehicles will be running in different lanes. Many times, one or more vehicles has to change lanes to change direction, many time it is difficult for the vehicles to change the lane. A huge amount of co-ordination is required among the vehicles in different lanes to change from one lane to another lane. Following diagram (Figure 1) talks about multi-lane highway, it is difficult for one vehicle to change from one lane to another lane.
Proposing a method and system by which
1. In a multi-lane highway if any driver-less vehicle needs to change from one lane to another lane, then software installed in the driver less vehicle cloud system will identify the lanes individually and each participating vehicles will be informed about the change in lane.
2. The target vehicle will communicate the direction of travel across the lanes to the cloud server and accordingly cloud server will communicate with the nearby vehicles in different lanes to create an open space for the target vehicle to travel. The open space will be created based on dimension of the participating vehicles.
3. The open space will be continued till the vehicle reaches to the target lane.
4. The participated vehicles will automatically adjust the spacing and speed to maintain the spacing till the time the target vehicle reaches to the target location.
Following diagram (Figure 1) talks about a 4 lane highway, one vehicle will be changing from one lane to another lane. As the vehicles are moving in parallel in different lanes, so the vehicle has to coordinate with all the participating vehicles, and accordingly clear space will be create to change the lane.
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Following diagram (Figure 2) talks about how the participating vehicles have created a movement path for the Vehicle A travel to the target lane of the highway. Once the requested the created, cloud server will identify the participating nearby vehicles and accordingly movement space for the vehicle will be created. In this case space will be created by reducing the clearance between the pair of vehicles, increasing the speed and creating some space etc. As all the vehicles are moving with same speed, so the relative velocity among the vehicles will be zero.
As per the following diagram, Vehicle 2 is crossing the lane and Vehicle 1 is running behind in that particular lane. Vehicle 1 and vehicle 2 can collided with each other (for example Point 2 with Point 7),
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Again, for simplicity lets consider length of both the vehicles are same, Length is L and width is W. Also consider the clearance between the vehicle 2 and Vehicle 1 is = C, and while crossing the lane the angle
As Vehicle 2 is moving in an angular way, So the Projected length of vehicle 2 is = P . , Projected length is Point 5 to...