IP Library Granted Patent US 12670786
Granted Patent B2
US 12670786 · App. 18/722,779 · Granted Jun 30, 2026

Introduction support apparatus of pedestrian-vehicle separated signal control, introduction support method, and non-transitory computer readable medium storing program

Inventors: Nobuyuki Tozawa (Tokyo, JP); Ryota Horiguchi (Tokyo, JP); Morihisa Iijima (Tokyo, JP)
Assignee: NEC CORPORATION
G08G1/081G08G1/005G08G1/0145
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Quick Facts
Patent No.
US 12670786
App. No.
18/722,779
Granted
Jun 30, 2026
Kind
B2
Abstract

An introduction support apparatus ( 10 ) of pedestrian-vehicle separated signal control according to the present disclosure includes: a data acquisition unit ( 11 ) configured to acquire data regarding movements of vehicles and pedestrians within a measurement zone of an intersection that is a candidate for introduction of pedestrian-vehicle separated signal control; a first calculation unit ( 12 ) configured to calculate a first evaluation index indicating a degree to which the movements of the vehicles in the intersection are impeded by the pedestrians based on the data acquired from the data acquisition unit ( 11 ); and an evaluation unit ( 13 ) configured to obtain an evaluation value for evaluating whether or not to introduce the pedestrian-vehicle separated signal control based on the first evaluation index.

Claims (56)

1 . An introduction support apparatus of pedestrian-vehicle separated signal control, the introduction support apparatus comprising:

at least one sensor;

at least one memory storing instructions, and

at least one processor configured to execute the instructions to;

acquire, based on data captured by the at least one sensor, data regarding movements of vehicles and pedestrians within a measurement zone of an intersection that is a candidate for introduction of pedestrian-vehicle separated signal control;

calculate a first evaluation index indicating a degree to which the movements of the vehicles in the intersection are impeded by the pedestrians based on the acquired data; and

obtain an evaluation value for evaluating whether or not to introduce the pedestrian-vehicle separated signal control based on the first evaluation index,

wherein the first evaluation index is calculated based on statistics regarding an amount of a waiting time that vehicles which are about to turn right or left in the intersection have to wait because they are impeded from turning right or left due to the presence of pedestrians entering the intersection in a predetermined period of time, and

wherein the waiting time includes a waiting time for a vehicle which is about to turn right or left that stops based on the vehicle being impeded from turning right or left due to the presence of the pedestrians entering the intersection, and a waiting time for subsequent vehicles traveling straight ahead that are impeded from traveling due to the presence of the stopped vehicle which is about to turn right or left.

2 . The introduction support apparatus of the pedestrian-vehicle separated signal control according to claim 1 , wherein

the first evaluation index is a total waiting time in a predetermined period of time, and

the at least one processer is further configured to execute the instructions to

set the evaluation value to be large when the total waiting time satisfies a predetermined condition.

3 . The introduction support apparatus of the pedestrian-vehicle separated signal control according to claim 1 , wherein the at least one processer is further configured to execute the instructions to

calculate a second evaluation index when the pedestrian-vehicle separated signal control is introduced in the intersection by a traffic flow simulation, and

the evaluation value is changed based on the second evaluation index.

4 . The introduction support apparatus of the pedestrian-vehicle separated signal control according to claim 1 , wherein the at least one processer is further configured to execute the instructions to

acquire data regarding movements of vehicles and pedestrians at an adjacent intersection that is adjacent to the intersection,

calculate a first evaluation for the adjacent intersection indicating a degree to which the movements of the vehicles in the adjacent intersection are impeded by the pedestrians based on the data of the adjacent intersection, and

obtain the evaluation value based on the first evaluation index in the intersection that is the candidate for the introduction and the first evaluation index for the adjacent intersection.

5 . The introduction support apparatus of the pedestrian-vehicle separated signal control according to claim 4 , wherein the at least one processer is further configured to execute the instructions to set the evaluation value to be large when both the first evaluation index in the intersection that is the candidate for the introduction and the first evaluation index for the adjacent intersection satisfy a predetermined condition.

6 . An introduction support method executed by a pedestrian-vehicle separated signal control introduction support apparatus including a computer, the method comprising:

acquiring, based on data captured by at least one sensor, data regarding movements of vehicles and pedestrians within a measurement zone of an intersection that is a candidate for introduction of pedestrian-vehicle separated signal control;

calculating a first evaluation index indicating a degree to which the movements of the vehicles in the intersection are impeded by the pedestrians based on the acquired data; and

obtaining an evaluation value for evaluating whether or not to introduce the pedestrian-vehicle separated signal control based on the first evaluation index,

wherein the first evaluation index is calculated based on statistics regarding an amount of a waiting time that vehicles which are about to turn right or left in the intersection have to wait because they are impeded from turning right or left due to the presence of pedestrians entering the intersection in a predetermined period of time, and

wherein the waiting time includes a waiting time for a vehicle which is about to turn right or left that stops since this vehicle is impeded from turning right or left due to the presence of the pedestrians entering the intersection, and a waiting time for subsequent vehicles traveling straight ahead that are impeded from traveling due to the presence of the stopped vehicle which is about to turn right or left.

7 . The introduction support method according to claim 6 , wherein

the first evaluation index is a total waiting time in a predetermined period of time, and

the evaluation value is set to be large when the total waiting time satisfies a predetermined condition.

8 . The introduction support method according to claim 6 , further comprising:

calculating a second evaluation index when the pedestrian-vehicle separated signal control is introduced in the intersection by a traffic flow simulation; and

changing the evaluation value based on the second evaluation index.

9 . The introduction support method according to claim 6 , further comprising:

further acquiring data regarding movements of vehicles and pedestrians at an adjacent intersection that is adjacent to the intersection;

calculating a first evaluation for the adjacent intersection indicating a degree to which the movements of the vehicles in the adjacent intersection are impeded by the pedestrians based on the data of the adjacent intersection; and

obtaining the evaluation value based on the first evaluation index in the intersection that is the candidate for the introduction and the first evaluation index for the adjacent intersection.

10 . The introduction support method according to claim 9 , wherein the evaluation value is set to be large when both the first evaluation index in the intersection that is the candidate for the introduction and the first evaluation index for the adjacent intersection satisfy a predetermined condition.

11 . A non-transitory computer readable medium storing a program causing a computer to execute processing for:

acquiring, based on data captured by at least one sensor, data regarding movements of vehicles and pedestrians within a measurement zone of an intersection that is a candidate for introduction of pedestrian-vehicle separated signal control;

calculating a first evaluation index indicating a degree to which the movements of the vehicles in the intersection are impeded by the pedestrians based on the acquired data; and

obtaining an evaluation value for evaluating whether or not to introduce the pedestrian-vehicle separated signal control based on the first evaluation index,

wherein the first evaluation index is calculated based on statistics regarding an amount of a waiting time that vehicles which are about to turn right or left in the intersection have to wait because they are impeded from turning right or left due to the presence of pedestrians entering the intersection in a predetermined period of time, and

wherein the waiting time includes a waiting time for a vehicle which is about to turn right or left that stops since this vehicle is impeded from turning right or left due to the presence of the pedestrians entering the intersection, and a waiting time for subsequent vehicles traveling straight ahead that are impeded from traveling due to the presence of the stopped vehicle which is about to turn right or left.

12 . The non-transitory computer readable medium according to claim 11 , wherein

the first evaluation index is a total waiting time in a predetermined period of time, and

the evaluation value is set to be large when the total waiting time satisfies a predetermined condition.

13 . The non-transitory computer readable medium according to claim 11 , comprising:

calculating a second evaluation index when the pedestrian-vehicle separated signal control is introduced in the intersection by a traffic flow simulation; and

changing the evaluation value based on the second evaluation index.

14 . The non-transitory computer readable medium according to claim 11 , comprising:

further acquiring data regarding movements of vehicles and pedestrians at an adjacent intersection that is adjacent to the intersection;

calculating a first evaluation for the adjacent intersection indicating a degree to which the movements of the vehicles in the adjacent intersection are impeded by the pedestrians based on the data of the adjacent intersection; and

obtaining the evaluation value based on the first evaluation index in the intersection that is the candidate for the introduction and the first evaluation index for the adjacent intersection.

15 . The introduction support apparatus of the pedestrian-vehicle separated signal control according to claim 1 , wherein the at least one sensor comprises a camera.

16 . The introduction support apparatus of the pedestrian-vehicle separated signal control according to claim 1 , wherein the at least one sensor comprises a camera and the at least one processor is further configured to execute the instructions to acquire the data regarding movements of the vehicles and the pedestrians using video data captured by the camera.