Netherlands

City: 
General
Facility Type: 
plus lanes ( narrower, 2.7m) , and hard shoulder
Description: 
plus lanes (small left lane) only used in special conditions, restriping to get 3.5m shoulders where shoulder use is to be implemented. 350km of HSR and plus lanes
Date Implemented: 
1994 in expansion
Other Information: 
Automatic signaling in the TMC when traffic flow>1500vphpl, then operator needs to check shoulder clearance.
Operational Information
Allowed Vehicles: 
all on right shoulder, no trucks on plus lane (width 2+m excluded)
Operational Hours: 
rush hours
Conditions: 
Speed harmonization is necessary for safety reasons when shoulder use is on. use for rush hours ONLY,
Maximum Speed: 
70km/h if plus lane
Geometric Features
Cross Section Details: 
plus lane 2.7m, and classic shoulder 3.5m
Treatment at Interchanges: 
No exiting necessary
Pull Off Areas: 
every 1km
Traffic Control Devices
Overhead Signs and Signals: 
Red X when closed,
Ground Mounted Signs: 
VMS or drum rotating signs
Performance Measures
Operational Effectiveness: 
plus lane and 70km/h limit produced a 42% increase in capacity