METHODS AND SYSTEMS FOR ESTIMATING ROAD TRAFFIC
First Claim
1. A system for estimating road traffic in a road segment at a given time, comprising:
- a central server; and
at least one ofone or more mobile communication units installed in a vehicle passing the road segment at the given time, wherein each of the mobile communication unit is capable of sending a plurality of mobile spot values to the central server, andone or more fixed communication units installed for detecting wireless enabled objects in vehicles passing the road segment at the given time, wherein each of the fixed communication unit is capable of sending a plurality of detected spot values to the central server,wherein the central server is capable of processing the at least one of the plurality of mobile spot values and the plurality of detected spot values to estimate road traffic in the road segment at the given time.
0 Assignments
0 Petitions
Accused Products
Abstract
Disclosed are systems and methods for estimating road traffic in a road segment at a given time. The system comprising: a central server; and at least one of one or more mobile communication units installed in a vehicle passing the road segment at the given time, wherein each of the mobile communication unit is capable of sending a plurality of mobile spot values to the central server, and one or more fixed communication units installed for detecting wireless enabled objects in vehicles passing the road segment at the given time, wherein each of the fixed communication unit is capable of sending a plurality of detected spot values to the central server. The central server is capable of processing the at least one of the plurality of mobile spot values and the plurality of detected spot values to estimate road traffic in the road segment at the given time.
13 Citations
24 Claims
-
1. A system for estimating road traffic in a road segment at a given time, comprising:
-
a central server; and at least one of one or more mobile communication units installed in a vehicle passing the road segment at the given time, wherein each of the mobile communication unit is capable of sending a plurality of mobile spot values to the central server, and one or more fixed communication units installed for detecting wireless enabled objects in vehicles passing the road segment at the given time, wherein each of the fixed communication unit is capable of sending a plurality of detected spot values to the central server, wherein the central server is capable of processing the at least one of the plurality of mobile spot values and the plurality of detected spot values to estimate road traffic in the road segment at the given time.
-
-
2. A method for estimating road traffic in a road segment at a given time, comprising:
-
collecting at least one of a plurality of mobile spot values of vehicles passing the road segment at the given time, and a plurality of detected spot values of detection of wireless enabled objects in vehicles passing the road segment at the given time; and processing the at least one of the plurality of mobile spot values and the plurality of detected spot values to estimate road traffic in the road segment at the given time. - View Dependent Claims (3)
-
-
4. A method for computing an average speed and travel time at a current time of at least a moving vehicle on at least a road segment, the method comprising the steps of:
-
receiving at least a first set of spot values; computing a spot time window; forming a second set of spot values; forming a third set of spot values; computing at least a travel time for each vehicle; computing an average travel time on the road segment; computing a variance; computing a minimum and a maximum value of acceptable travel time for the road segment; forming a fourth set of spot values; checking number of spot values; and calculating the average speed and travel time of the road segment, wherein a plurality of spot values representing vehicles travelling on a road are used for computing the average speed and travel time, wherein at least a start geographical location and an end geographical location are adapted on the road segment for computing said average speed and travel time, wherein the first set of spot values are received from at least one of said moving vehicle and the road side units capable of reporting collected information from on-board units in case of connected vehicle system. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
-
24. A system for computing an average speed and travel time at a current time of at least a moving vehicle on at least a road segment, comprising:
-
means for receiving at least a first set of spot values from said vehicle; means for computing a spot time window having spot values mapped to at least said road segment; means for forming a second set of spot values; means for forming a third set of spot values; means for computing at least a travel time for each vehicle using the spot values which are in the third set of spot values; means for computing an average travel time on the road segment from the travel time for each vehicle using the spot values which are in the third set of spot values; means for computing a variance by using the average travel time in the road segment and the travel time for each vehicle using the spot values which are in the third set of spot values; means for computing a minimum and a maximum value of acceptable travel time for the road segment; means for forming a fourth set of spot values; means for checking whether the number of spot values in the fourth set of spot values is more than a predefined minimum number of spot values required for computing the average speed and travel time of the road segment; means for calculating the average speed and travel time of the road segment; and means for repeating the above steps of the method for another time stamp, if the number of spot values in the fourth set of spot values is not more than a predefined minimum number of spot values required for computing the average segment travel time of the road segment, wherein a plurality of spot values representing vehicles travelling on a road are used for computing an average speed and travel time, wherein at least a start geographical location and an end geographical location are adapted on the road segment for computing said average speed and travel time.
-
Specification