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Sensor Network - IOT
❯Unmanned protective vehicle for road works on motorways
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Unmanned protective vehicle for road works on motorways
Goal:
OtherProblem addressed
A vehicle that is able to automatically follow mobile road works on the hard
shoulder of a German motorway.
Scope of use case
Unmanned operation of a protective vehicle in order to reduce the risk for road
workers in short-term and mobile road works carried out in moving traffic.
Description
A typical operational scenario for the automated unmanned
protective vehicle is as follows: At the beginning of the
operation, an employee of the road maintenance service
manually drives the protective vehicle from the depot to the
location of the road works. There the employee stops the
protective vehicle and switches to the road maintenance
vehicle in front. The employee can activate the automated
operation of the protective vehicle via a user interface. The
vehicle guidance system then takes over the longitudinal and
lateral control of the protective vehicle and it follows the
road maintenance vehicle at a defined distance at low speeds
of about 10 km/h. In unmanned operation the vehicle
guidance system operates in one of three automated modes:
follow mode, coupled mode, and safe halt. In follow mode,
the vehicle guidance system performs the longitudinal and
lateral control based on environmental information.
Environment perception extracts the lane boundaries, e.g.
lane markings, of the highway hard shoulder, the road
maintenance vehicle and other obstacles in front of the
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protective vehicle. If an obstacle is detected, e.g. an abruptly
halting car, the system automatically transitions into safe
halt. The system also performs this transition if it detects that
it is not capable of maintaining unmanned operation. In
coupled mode, the protective vehicle is controlled by the
vehicle guidance system, too. The longitudinal and lateral
control is purely based on control commands and state
information from the road maintenance vehicle. While lane
boundaries are ignored in this mode of operation, obstacles
in front of the protective vehicle are still detected. As in
follow mode, the protective vehicle is able to detect
functional system boundaries and to transfer itself to safe
halt.
Sensor Network - IOT
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