What the data for this category looks like
Core data for expressway operations originates from toll lane systems, road network monitoring platforms, road patrol terminals, and employee attendance and scheduling systems. Toll transaction data is generated in real time per lane. Patrol records are uploaded per individual task. Attendance data is synced daily. Road condition alert data is updated every 5 minutes.
Externally exposed data documents use structured JSON format, including fields such as site code, lane number, transaction time, vehicle type, toll amount, and more. Units include yuan, minutes, trips, kilometers, and other standard units. Some fields require association with road network topology data to complete validation.
What constraints these characteristics impose on HTTP interfaces and external systems
Real-time toll transaction requirements mandate that interface response times not exceed 2 seconds, otherwise lane throughput efficiency will be affected. Multi-source data synchronization requires configuring interface call intervals according to different update frequencies. Real-time toll data is called every 10 seconds. Non-real-time patrol and attendance data is synced once daily.
External interfaces associated with road network topology must carry site ID as a required parameter, otherwise data validation cannot be completed. When pulling patrol records in batches, the number of records per single request must be limited to avoid excessive interface load. Sensitive traffic data must carry authentication information via the Authorization parameter to prevent unauthorized access.
How to configure settings
FastGPT v4.17.0
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
| Interface timeout period | 600 seconds | Covers the maximum time required for batch patrol record pulls |
Authorization | Bearer static token | Complies with the authentication specifications of expressway operation systems |
| Maximum records per single request | First 100 entries | Avoids excessive interface load, adapts to single-batch data volume |
responseData | Filter core business fields | Reduces data transmission volume and lowers parsing overhead |
variables | Bind site code and time range | Adapts to data pull requirements across multiple sites and cycles |
Three common configuration mistakes
- Phenomenon: After streaming output via the conversation API, link clicks only overwrite the current page and cannot jump to a new page. Cause: The jump trigger parameter in
responseDatais not configured correctly, causing the frontend to fail to recognize the new window instruction. - Phenomenon: Conversation log details do not match the actual answer content. Cause: Context variables bound via
variablesare not updated with conversation turns, causing the interface to repeatedly call old data. - Phenomenon: Streaming output return speed is fixed, and cannot be adjusted to once per 1 second or 2 seconds. Cause: The rate control switch is not enabled in the interface configuration, or custom interval parameters are not passed via
variables.
How to confirm the configuration is correct
- Call the test interface, check if the returned
responseDatafield only includes preset core business fields, and verify that the field format matches the system documentation. - Trigger batch data pull, confirm that the interface response time does not exceed the preset timeout period, and that the number of returned records complies with the single-request limit.
- Send a request with authentication, check that the return status code is 200, with no 401 unauthorized errors, confirming that the
Authorizationconfiguration takes effect. - Adjust the time range parameter in
variables, confirm that the data range returned by the interface updates along with the parameter changes.
The values provided here are common starting points, and should be evaluated against the relevant system’s own sample data.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-28.