GB/T 39900-2021General technical requirements for the road traffic signal control system (English PDF)

3.1 [Road] traffic signal control system

By road traffic signal control machine, road traffic signal light, traffic flow detection equipment, communication equipment, control computer and related software, etc. It is a system used for road traffic signal control. [GB/T 31418-2015, definition 2.6.1]

3.2 Intersection control parameter

Intersection control parameter controlparameterofcrossing A collection of signal control parameters for intersections, generally including lanes, detectors, signal light groups, signal groups, control schemes, daily plans, and weekly Or special day schedule and other parameter information.

5.3 Device parameter configuration

5.3.1 Signal

Supports configuration of signal parameters, including signal unique identification, firmware or software version, installation information, network configuration, geographic location Mark location and other information.

5.3.2 Signal light group

Support the configuration of the parameters of the signal light group, including.

a) It should be able to configure the direction, type, terminal and other parameters of the signal light group according to the control requirements of the intersection;

b) It should support the configuration of various signal light parameters, including motor vehicle signal lights, direction indicator lights, non-motor vehicle signal lights, and pedestrian signals Lights and lane signals, etc.;

c) Semaphore green conflict configuration and green conflict judgment should be supported;

d) It should support the parameter configuration of special signal lights for buses, trams, trolley buses and other vehicles.

5.3.3 Detector

Support the configuration of the connected detector parameters, including detector type, installation location, attributes, etc. Support coil, video, geomagnetism, micro Detector types such as wave, radio frequency (RFID), etc.

5.3.4 Countdown timer

It can support the configuration of countdown timer parameters, including countdown timer type, communication parameters, installation position, etc.

5.3.5 Other equipment

It can support the parameter information of the connected variable guidance lane indicator, pedestrian request button, signal control auxiliary information display screen and other equipment. Information to be configured.

5.4 Road network parameter configuration

5.4.1 Intersection

Support the configuration of the basic parameters of the intersection, including the name, shape, geographic coordinate position, lane information, etc. of the intersection.

5.4.2 Trunk

Support the configuration of the parameters of the control trunk, including the basic information of the trunk, the road sections included in the trunk, and the intersection information included in the road sections, etc.

5.4.3 Area

It should support the configuration of the parameters of the control area, including the basic information of the area, the sub-area contained in the area, and the basic information of the sub-area.

5.5 Control mode selection

Support the selection and execution of corresponding control methods according to different control requirements, including timing control, induction control, adaptive control, and human Manual intervention, and can realize the parameter configuration and automatic switching of degraded control.

a) Timing control, supporting the selection of single-point timing control, trunk timing coordinated control, and sub-zone timing coordinated control;

b) Induction control, which can support the selection of single-point induction control and trunk line induction coordinated control;

c) Adaptive control, which can support the selection of single-point adaptive control, main line adaptive coordinated control, and area adaptive coordinated control;

d) Manual intervention control, support selection of phase lock/unlock, manual step, yellow flash, full red, turn off and other manual intervention controls;

e) Degradation control, automatically degrade the control when an abnormality occurs in the network, central software module, etc.; in the induction or adaptive control mode, check When the detector is faulty or abnormal, the relevant phase degradation plan shall be implemented, and the original control party shall be automatically restored after the fault or abnormality is eliminated. Formula, plan;

f) The control method should comply with GA/T 527.1.

5.6 Control plan configuration

5.6.1 Phase sequence

Supports configuration of phase and sequence parameters, including.

a) Should support the configuration of two-phase and multi-phase parameters;

b) Configurable phase parameters such as phase name, phase attribute, phase time, phase minimum green, phase maximum green, signal group light color, etc.;

c) The corresponding phase release sequence can be set according to the control requirements, and different phase sequences can be configured in different control schemes.

5.6.2 Control parameters

Support the configuration of corresponding control parameters according to different control methods, including.

a) Phase control parameters, including green light time, yellow light time, red light time, etc.;

b) Coordinated control parameters, including common period, phase difference, green signal ratio, etc., should support configuration through time-distance diagram;

c) Sensing or adaptive control parameters, including the degradation plan, the minimum green, maximum green, and green light adjustment range of the phase.

5.6.3 Central plan

It can support the configuration of the central plan parameters, including.

a) Set up different types of central control plans as pre-plans according to the control scope, including intersections, trunk lines, areas, etc.;

b) Choose the existing signal control plan at the intersection or customize the central plan.

5.7 Scheduling plan management

Support the configuration management of the scheduling plan of the intersection and the center. The scheduling plan is divided into from low to high priority.

a) Intersection scheduling plan, which supports scheduling through daily plans, and sets different daily plans for working days, holidays, special days, etc. Scheduling, daily plan supports multiple time periods;

b) The central dispatching plan should support the central pre-planning through daily plans, designated start and end time periods, manual delivery, or triggering by specific conditions. Case scheduling and execution.

5.8 Special service priority control

Support parameter configuration, scheduling execution and historical query of special service priority control, including.

a) Route and plan configuration should support special service route priority, start and end locations, passing intersections, priority control phases of each intersection, etc. Information configuration;

b) The center manually intervenes to execute, supports users to select one or more intersections, and executes special service priority control by manual triggering;

c) The center automatically schedules and executes, and it should automatically schedule according to the preset start time and time interval to implement special service priority control;

d) Vehicle location drive execution, it should be based on the real-time geographic location information of the outfield special service vehicle, and the drive center control software should automatically execute the special service. Diligent priority control;

e) Execute log record query, support information such as users who operate special service tasks, special service lines, priority control success or failure, execution time, etc. Information recording and log query.

5.9 Running status monitoring

5.9.1 Traffic flow operating status

It can support the monitoring of the real-time traffic flow operating status of the intersection, including flow, queue length, saturation, congestion, etc.

5.9.2 Signal control status

Support the monitoring of the real-time signal control status of the intersection, including control mode, control plan, period, phase difference, phase duration, signal Light color, etc.

5.9.3 Equipment operating status

Support the monitoring of the real-time operating status of semaphores, signal lights, detectors and other equipment, including networking status, fault status, etc.

5.9.4 Software running status

Support the monitoring of the real-time operating status of each software module, including the configuration information, operating status, and available storage space of the module.

5.10 Data storage and analysis

5.10.1 Data storage

Support the use of a central database to centrally store various data of the signal control system. The content and format of the data should meet the requirements of Appendix A.

5.10.2 Statistical analysis of traffic flow data

Supports statistical analysis of traffic flow data according to different query conditions, including.

a) Statistically analyze traffic flow data such as traffic flow and occupancy rate by year, month, week, day or specified time period;

b) Statistics traffic flow data by lane, flow direction or import;

c) Statistic traffic flow data according to signal cycle and phase time.

5.10.3 Statistical analysis of control parameters

It can support statistical analysis of control parameters, including.

a) Perform statistical analysis on the change law of control parameters such as signal cycle and phase time at the intersection;

b) Statistical analysis of intersection control parameters and corresponding traffic flow data changes.

5.10.4 Data analysis report output

It can support the output of information such as intersection configuration parameters, control plans, traffic flow data statistical analysis results, and control parameter statistical analysis results.

The output format supports one or more of HTML, PDF, Word, and Excel.

5.11 Evaluation and optimization

5.11.1 Assessment of traffic conditions

It can support the calculation and evaluation of relevant indicators of traffic status, including basic indicators such as traffic flow, occupancy rate, queue length, and average vehicle speed.

Characteristic indicators such as the total traffic flow in the coordinated direction and the average travel speed in the coordinated direction.

5.11.2 Evaluation of control benefits

It can support the evaluation and calculation of relevant indicators of control benefits, including the maximum flow rate change rate, and the total traffic flow change in the coordinated direction Relative indicators such as the rate of change, the average travel speed change rate in the coordinated direction, as well as the unit green light time throughput, saturation, average signal control delay, etc.

Absolute index. The traffic status and the evaluation of control benefits shall comply with the regulations of GA/T 527.2.

5.11.3 Optimization of control scheme

It can support the optimization of signal control schemes based on signal control operation information and traffic flow data, including cycle, green signal ratio, phase difference, Adjustment and optimization of elements such as minimum green phase, maximum green phase, time period division, and sub-zone division.

5.12 Fault abnormal alarm

5.12.1 Equipment failure alarm

Supports automatic alarms when the equipment of the signal control system fails or is abnormal, including semaphores, signal lights, detectors, network communications, etc. equipment. The alarm information should include information such as intersection information, equipment location, time of occurrence of failure, and cause of failure.

5.12.2 Software failure alarm

Automatically alarm when the service software module of the support center control software fails or abnormal, including communication, processing, storage, analysis and other backgrounds Service software module. The alarm information should include information about the module, the time of occurrence of the failure, and the cause of the failure.

5.12.3 Alarm for abnormal traffic operation status

It can support real-time monitoring of traffic operation status, and automatically alarm when abnormalities occur, including long queues, abnormal traffic, and congestion.

5.13 System Management

5.13.1 User Management

Support the configuration and management of user information, including.

a) Configure the user's basic information, including user name, password, basic personal information, affiliation, contact number, etc.;

b) Configure user role information, including role name, role permissions, etc.;

c) Multi-level sub-control can be carried out according to the user's jurisdiction and level, and authorization according to the jurisdiction is supported;

d) The user's identity needs to be authenticated before use;

e) Check user authority when using software function items, and prohibit access to unauthorized functions.

5.13.2 Jurisdiction Management

Support the configuration and management of jurisdiction parameters, support according to the user's actual jurisdiction (detachment, brigade, squadron) or custom cross The collection of mouths divides jurisdictions.

5.13.3 Log Management

Support the management of log information generated by the operation of the central control software, including.

a) Record the operation log of each software module, including the module name, version number, important operation content, occurrence time, execution result, etc., The output log content can be configured and filtered according to needs;

b) Record the user's main operation log, including user name, operation type, operation object, operation time, operation result and other information;

c) Query and statistics of log information, query and statistics conditions include time, type, result, etc.;

d) Automatic or manual cleaning of logs.

5.13.4 Security Configuration Management

Support the configuration and management of the parameters, logs and other information of various security guarantee mechanisms.

5.13.5 Time synchronization

Support time synchronization of equipment, including manual manual time service and software automatic time service.

5.14 Special functions

5.14.1 Priority control of bus signals

It can support the functions of information collection, processing, plan configuration and operation status monitoring related to the priority control of bus signals, by setting the green light Ways such as extending, shortening the red light, inserting the dedicated bus phase, and skipping the phase enable the signal priority release of bus vehicles.

5.14.2 Variable guidance lane control

It can support functions such as variable guidance lane indicator device information configuration, variable lane control scheme configuration and operation status monitoring, etc.

Set up manual switching, timing switching, adaptive switching, etc., to realize the coordinated control of variable-oriented lane indicator signs and traffic lights.

5.14.3 Tidal lane control

It can support related equipment information configuration, tidal lane plan configuration and operation status monitoring, etc., through manual switching, timing switching, and automatic Adapt to switching and other methods to realize the coordinated control of related equipment and traffic lights in tidal lanes.

5.14.4 Tram priority control

It can support the functions of information collection, processing, priority scheme configuration and operation status monitoring related to the priority control of trams.

Ways such as extending, shortening the red light, inserting the phase, and skipping the phase realize the priority release of the tram signal.

5.14.5 Ramp signal control

It can support functions such as ramp signal control scheme setting and running status monitoring, through manual switching, timing switching, adaptive switching, etc. Type to achieve ramp signal control.

5.14.6 Priority control of emergency vehicles

It can support functions such as emergency vehicle information configuration, emergency plan setting and operation status monitoring, and respond to emergency response to firefighting, ambulance, and emergency rescue.

Respond to the request of the assistance vehicle, and realize the signal priority release.

5.14.7 Oversaturation optimization control

It can support control plan configuration and operation status monitoring, etc., through adjustments to the intersection or sub-area oversaturated flow direction plan, etc. Optimized control of line signal.

6.1 System capacity

The capacity of the signal control system should meet the following index requirements.

a) Support the number of access intersections greater than or equal to 500;

b) Support the configuration of the number of users greater than or equal to 50, and support the number of simultaneous online operation users greater than or equal to 10;

c) A single intersection supports the number of configuration control plans greater than or equal to 16, and the number of support configuration center plans is greater than or equal to 32;

d) The number of day plans can be set to be greater than or equal to 36 for a single intersection, and the number of time periods that can be divided into a single day plan is greater than or equal to 8.

6.2 Time synchronization

The time of the signal control system including all equipment should be synchronized with Beijing time, and the timing error of 24h should not exceed ±2s.

6.3 Data transmission

6.3.1 Transmission frequency

Data such as the control interaction information between the central control software and the semaphore, the operating status of the semaphore, faults and abnormal alarms, etc. should be transmitted in real time.

When the data changes, the data is transmitted immediately, and the traffic flow statistics and other data are transmitted regularly according to the configured time interval.

6.3.2 Transmission delay

The average transmission delay of the communication network of the signal control system should be less than or equal to 1s, and the transmission of a single instruction from the central control software to the signal machine The delay (excluding network delay) should be less than or equal to 1s.

6.3.3 Transmission consistency

It shall have the function of guaranteeing the consistency of data transmission to ensure that the central control software is consistent with the data of the field signal.

6.4 Data storage time

The data storage time of the central control software should be greater than or equal to 2 years.

6.5 Continuous operation reliability

The central control software can run continuously for 240h without failure.

8.1 User authentication

The user authentication of the signal control system shall meet the following requirements.

a) Verify the user name and password when using the central control software;

b) Each user uses an independent account;

c) Authorize users in accordance with the actual management jurisdiction.

8.2 Cyber Security

The signal control system should meet the following network security requirements.

a) The network uses a dedicated network instead of the Internet;

b) Possess anti-virus and anti-network intrusion measures;

c) Use communication equipment with the ability to suppress or isolate network faults such as network storms.

8.3 Information Security

The signal control system shall comply with the following information security requirements.

a) When the signal control system is online with the signal machine, two-way identity authentication should be carried out, and relevant operations can be carried out after the verification is passed;

b) The signal machine shall verify the instructions issued by the signal control system, and the instructions are valid after the verification is passed;

c) The central control software (including communication, database, etc.) should run on an independent server;

d) Key configuration information such as the user name and password of the user account and the user name and password of the database should be encrypted when stored and transmitted;

e) Basic configuration information, user information, equipment information, authority information, alarm information, traffic flow statistics, important operation logs, etc.

Regular backups should be used for redundant backup of key storage components; […]