Germany

City: 
Rural applications
Facilities: 
Autobahns 8, 3 and 5
Facility Type: 
motorways
Length of Controlled Section: 
sections up to 30km
Objectives: 
stabilize flow, reducing crashes, improving driving comfort and reducing impact on environment
Date Implemented: 
from 1970s
Operational Information
Concerned Vehicles: 
all
Type of Control: 
automated
Operating Partners: 
German ministry of transport
Speed Information
Speed Limit: 
regulatory
Speed Variability: 
100/80/60 km/h, speed determined by algorithm based on traffic data coming form loop detectors and environmental data measured by fog, ice, wind and other detectors.
Traffic Control Devices
Speed Signs: 
every 1.5 to 2 km
ITS: 
loop detectors, weather sensors(ITS?)
Performance Measures
Operational Effectiveness: 
better response form drivers to electronic signage than static signage, because the electronic signs provide advisory information
Safety Evaluation: 
crash rate reduced by 20-30%
Lane Speeds: 
One speed limit for all lanes
Enforcement
Enforcement: 
Enforceable