Passage management
Safely reversing in a parking lot
The change of direction is carried out as a sequence of states, rather than as a simultaneous switching of signals: first the strip is closed on both sides, then its release is confirmed.

Parking with a shared ramp, narrow driveway or variable loading directions
Operator, driver, operation service, technical service
CShark cameras, traffic lights, two-way displays, bollards, local controller
Direction, lane occupancy, entry status, device confirmations and schedule
Object task
What the script should provide
- Change direction capacity during morning and evening peaks.
- Avoid oncoming traffic when switching modes.
- Maintain manageability when communication with the central server fails.
Sequence
How does CShark work?
Switch command
The operator selects a new mode or the system initiates it according to the approved schedule and loading conditions.
Closing entrances
Both directions receive a prohibiting signal. The boards stop directing cars to the reversible section.
Clearing the lane
Cameras confirm the absence of cars and obstacles in the entire controlled area.
Opening a direction
Once the devices are confirmed, CShark turns on the enable signal only on the selected side and updates the navigation.
Traffic control
The system monitors movement along the lane, records deviations and does not allow the next mode change until the conditions are met.
Interfaces
What does each role see?
Driver
Sees an unambiguous signal and information in the direction of travel on the side of the board facing him.
Operator
Observes the switching phase, locked conditions, and confirmation of each device.
Operation
Configures scheduling, safe delays, offline mode, and recovery order.
Exceptions
How deviations are processed
The car stays in the lane
The opening of a new direction is blocked; the operator sees the position of the vehicle and the reason for the wait.
One traffic light did not confirm the signal
The reversible section remains closed, and a technical problem is formed.
Loss of communication.
The local controller maintains or establishes a consistent safe state until control is restored.
Result
What does the object get?
- Switching is carried out only after the lane has been confirmed to be free.
- The boards, traffic lights and navigation show the agreed direction of movement.
- Each stage and manual intervention is available in the object's event log.
Project CShark