Denmark

City: 
copenhagen
Facilities: 
M3
Facility Type: 
motorways
Length of Controlled Section: 
17km
Objectives: 
During construction, have the same number of accidents as prior to construction or better, keep an acceptable traffic flow, inform drivers and reroute them as much as possible
Conditions: 
temporary(construction), and permanent
Date Implemented: 
2005
Date Terminated: 
not terminated after construction ended in 2009
Operational Information
Concerned Vehicles: 
all
Operating Partners: 
Steria,(france), Danish road directorate
Other ATDM Approaches: 
possible hard shoulder running, travel time indications, queue warning
Traffic Control Devices
Explanatory Signs: 
VMS
ITS: 
traffic detection systems, CCTV, VMS (for travel times, queues, etc.) , CCTV, web applications
Performance Measures
Operational Effectiveness: 
The capacity decreased by 8 and 3% for the northbound and southbound directions respectively. The ATM measures did not suffice to compensate the construction works.
Safety Evaluation: 
one year results show no significant change in crashes (results not statistically significant)
Lane Speeds: 
One speed limit for all lanes
Other Impacts: 
Gaps between vehicles were reduced noticeably at speed betwwen 80 and 100km/h, The number of rerouted vehicles did not reach the expectations which aimed at 25-30% traffic reduction on the M3
Institutional Issues
Public Opinion: 
variable speed limits are correctly understtod by 82%, lane closure signs are understood by 96% but 42% do not understand at which point the closure takes effect