Patent classifications
E
FIXED CONSTRUCTIONS
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E01
CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
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9/00
Arrangement of road signs or traffic signals; Arrangements for enforcing caution
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E01F9/50
Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
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E01F9/588
Lane delineators for physically separating traffic lanes and discouraging but not preventing crossing
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