According to callers, a motorist has lain behind the electric wheelchair with hazard warning lights on to warn other drivers.
The police have sent out a patrol from Kalmar but have not yet found the crew at 20.15.
The road over the bridge is a county road and a double lane.
- Above all, it is dangerous, it is dark and with such a slow-moving vehicle, it can be difficult to stop, says the police's spokesperson at the regional command center in Malmö.
The article is updated.