PIARC Dictionary
Technical Dictionary of Road Terms
validated by the members of the Technical and Terminology Committees of PIARC.
- Reference languages: English and French.
- June 2012 1,795 concepts, of which about 1,100 with a definition.
- Available 100 % in English, Dutch and French and over 85 % in Czech, Estonian, German, Norwegian, Portuguese, Spanish and Ukrainian.
- Partly available in Arabic, Chinese, Greek, Hungarian, Italian, Japanese, Latvian, Persian, Romanian, Russian, Serbian and Vietnamese.
Theme
- 1-0-0 Types of Roads
- 2-0-0 Design and Geometry
- 3-0-0 Traffic and Transport
- 4-0-0 Intersections
- 5-0-0 Components of the Road
- 6-0-0 Drainage
- 7-0-0 Auxiliary Works and Accessories
- 8-0-0 Structure of the Pavement
- 9-0-0 Materials
- 10-0-0 Construction
- 11-0-0 Quality, Faults and Tests
- 12-0-0 Structures
- 13-0-0 Maintenance, Winter Maintenance and Management
- 14-0-0 Economics and Finance
- 15-0-0 Tunnels
- 16-0-0 Environment, Nuisance, Accidents
Terms in Quality, Faults and Tests.
- alkali-aggregate reaction
- aquaplaning
- black deposits
- bleeding
- blister
- braking force coefficient a) locked wheel b) retarded wheel
- British pendulum tester
- buckling
- bump integrator
- collapse
- corrugation
- crack
- crazing
- delamination
- depression
- deterioration
- diagnosis
- distress
- drainability [outflow meter]
- erosion
- evenness
- flow
- fretting
- frost heave
- grip of tyres
- gully
- imprint
- longitudinal profile
- macrotexture
- mean segment depth
- megatexture
- microroughness
- microtexture
- peeling
- permeability
- polished-stone value
- polishing
- pothole
- profile depth
- profilometer
- pumping
- punching
- reflective cracking
- ridging
- rolling resistance
- rolling straightedge
- roughness 1
- rupture
- rut
- rut depth
- rut meter
- rutting
- scaling
- scouring
- shrinkage crack
- sideway force coefficient
- skidding
- skid resistance
- slab rocking
- slab stepping
- slide
- slip
- slippage crack
- slippage of surface layer
- slippery road
- slip resistance (CEN)
- spalling
- splash
- spray
- streaking
- stripping of aggregate
- stripping of binder
- subsidence
- sudden change of level
- surface characteristic
- swelling
- texture depth
- texture profile
- texture 1
- three-metre straightedge
- transverse profile
- tyre tread depth
- unevenness
- water film
- water layer
- wear
- whip-off
- yaw angle