Alphabetical View

Display Hierarchical | Alphabetical | KWOC | KWIC

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Rabbits (Jcbtvurr)
Race (Mhb)
Use For Racial factors
Race cars (Qbddhmckr)
Racial factors
Use Race (Mhb)
Racing (Ccbkxrsn)
Use For Speedways
Racon
Use Radar beacons (Dcnspbp)
Racon
Use Radar beacons (Dcnspsb)
Radar (Dcnsbq)
Radar air traffic control (Dcmtbw)
Use For Radar landing control
Radar antennas (Dsgmbs)
Radar beacons (Dcnspbp)
Use For Radar transponders; Racon
Radar beacons (Dcnspsb)
Use For Racon; Radar transponders
Radar beams (Sfxrr)
Radar clutter (Dcnspsdjc)
Use For Clutter
Radar cross section (Sfrwbrrr)
Use For Echo area
Radar detectors (Dmgdrr)
Radar devices (Dcnsps)
Radar displays (Dcnspsd)
Radar images (Dcnspsdj)
Radar landing control
Use Radar air traffic control (Dcmtbw)
Radar maps (Dcnspsdm)
Radar operators (Msdr)
Radar receivers (Dcnspsr)
Use For Navigation receivers
Radar reflection (Sfrwbrr)
Radar stations (Pfdep)
Radar stations (Pfmr)
Radar targets (Dcnspsdjt)
Radar tracking (Dcnsbyr)
Radar transponders
Use Radar beacons (Dcnspbp)
Radar transponders
Use Radar beacons (Dcnspsb)
Radar vehicle detectors (Dmgdrvr)
Radial highways (Pmrccnr)
Radial ply tires (Qpmtbpr)
Radial travel (Bmmt)
Radials (Upber)
Radiation
Use Electromagnetic radiation (Sfr)
Radiation dosage
Use Radiation doses (Hhrd)
Radiation doses (Hhrd)
Use For Radiation dosage
Radiation hazards (Hhr)
Radiation monitoring (Hhrm)
Radiation patterns (Sfrwbq)
Use For Antenna patterns
Radiation shielding (Hhrs)
Radiator caps (Qtbmbercwrc)
Radiators (Qtbmbercwr)
Radio (Dsbpp)
Radio and television (Dsbp)
Radio beacons (Dcnspbs)
Radio beacons (Dcnsptb)
Radio beams (Sfxr)
Radio control (Dcgur)
Radio direction finders (Dcnsptd)
Use For Direction finders
Radio equipment (Dsgm)
Use For Radios
Radio frequency (Sfrwbfr)
Radio frequency identification (Dmbjs)
Use For RFID
Radio frequency interference (Dsmrjr)
Radio links (Dsbppr)
Radio navigation (Dcnsbs)
Radio navigation devices (Dcnspt)
Radio receivers (Dsgmr)
Radio relay systems (Dsbpps)
Radio signals (Dsmbsr)
Radio stations (Pmgr)
Radio telemetry
Use Telemetry (Dsmmv)
Radio telephone (Dsbppt)
Use For Radiotelephone
Radio transmitters (Dsgmt)
Use For Transmitters
Radio wave propagation (Sfrwbbr)
Radio waves (Sfrwab)
Radioactive gages
Use Nuclear gages (Gumen)
Radioactive isotopes
Use Radioisotopes (Rbcbsr)
Radioactive materials (Bhgdr)
Radioactive materials (Rbmdsr)
Use For Nuclear materials
Radioactive waste disposal (Jfkydr)
Radioactive waste facilities (Pfwr)
Radioactive wastes (Bhgdw)
Radioactive wastes (Jfkbn)
Radioactivity (Spu)
Radiography (Esmghr)
Radioisotopes (Rbcbsr)
Use For Radioactive isotopes
Radiometers (Gumpfq)
Radiometric analysis (Gbccs)
Radiometry (Gmcer)
Radios
Use Radio equipment (Dsgm)
Radiotelephone
Use Radio telephone (Dsbppt)
Radius (Updr)
Radomes (Dsgmcr)
Radon (Rbcefkr)
Raft foundations
Use Mat foundations (Pbpbfm)
Rail (Railroads) (Pmudkr)
Use For Railroad rails
Rail components (Pmudkrk)
Rail fasteners (Rbmumttrf)
Rail grinding (Fmung)
Rail joints (Pmudkrkj)
Rail laying
Use Track laying (Fcfpt)
Rail lubrication (Fmunm)
Rail maintenance
Use Maintenance of way (Fmun)
Rail marine interface (Bbbam)
Rail motorcars (Qbfmkj)
Use For Railroad motorcars
Rail steel (Rbmdkdfsef)
Rail transit (Aetr)
Rail transit facilities (Pmuy)
Use For Rapid transit facilities
Rail transit stations (Pmurpr)
Rail transit stations (Pmuys)
Rail transportation
Use Railroad transportation (Aegk)
Railbuses (Qbfxb)
Railcar structural components (Qpgyr)
Railhead (Pmudkrkr)
Railroad accidents
Use Railroad crashes (Hbbgr)
Railroad ballast
Use Ballast (Railroads) (Rbmddvb)
Railroad bridges (Pdybmur)
Use For Elevated railroads
Railroad buildings (Pmur)
Railroad car trucks
Use Car trucks (Railroads) (Qpgyrt)
Railroad car wheels
Use Car wheels (Railroads) (Qpgyrwr)
Railroad cars (Qbfmk)
Railroad cars by type (Qbfmkt)
Railroad commuter cars
Use Commuter cars (Qbfmkhc)
Railroad commuter service (Aetrc)
Use For Commuter rail
Railroad construction (Fcfp)
Use For Line construction
Railroad crashes (Hbbgr)
Use For Railroad accidents
Railroad electrification (Fcfpe)
Railroad engineering (Ttkfwr)
Use For Railway engineering
Railroad engineers (Msgbbr)
Railroad equipment industry (Ncer)
Railroad facilities (Pmu)
Railroad facility operations (Bqr)
Railroad grade crossings (Pmuj)
Use For Highway railroad grade crossings; Grade crossings; Level crossings; Highway rail intersections
Railroad law (Crdr)
Railroad maintenance facilities (Pmurv)
Railroad materials (Rbmumttr)
Railroad motorcars
Use Rail motorcars (Qbfmkj)
Railroad rails
Use Rail (Railroads) (Pmudkr)
Railroad safety (Haar)
Railroad signaling (Dcmtrs)
Railroad signals (Dcmtrys)
Railroad simulators (Qtpstsr)
Use For Locomotive simulators; Train operations simulators
Railroad stations (Pmurp)
Railroad terminals (Pmurt)
Railroad ties (Pmudku)
Use For Ties; Cross ties; Sleepers
Railroad tracks (Pmud)
Use For Tracks
Railroad traffic (Btar)
Use For Train traffic
Railroad traffic control (Dcmtr)
Railroad traffic control devices (Dcmtry)
Railroad trains (Qbf)
Use For Trains
Railroad transportation (Aegk)
Use For Rail transportation
Railroad travel (Bmcr)
Railroad tunnels (Pdvtrr)
Railroad vehicle operations (Brr)
Railroad yards (Pmut)
Railroads (Nbbcg)
Use For Railways
Railway carriages
Use Passenger cars (Qbfmkh)
Railway engineering
Use Railroad engineering (Ttkfwr)
Railway wagons
Use Freight cars (Qbfmkf)
Railways
Use Railroads (Nbbcg)
Rain (Jbmbkmpr)
Rain gages (Gumur)
Rainfall (Jbmbkmprr)
Raised road markings (Dcmthrur)
Use For Road studs
Raised separators (Rbmdxssfr)
RAM
Use Random access memory (Qtpxmpbdp)
Ramjet engines (Qtbmbebkr)
Ramp control
Use Ramp metering (Dcmthcfr)
Ramp freeway junctions
Use Ramps (Interchanges) (Pmrcpjsrr)
Ramp metering (Dcmthcfr)
Use For Ramp control
Ramps (Pbpblr)
Ramps (Interchanges) (Pmrcpjsrr)
Use For Ramp freeway junctions
Ramps, corridors and stairs (Pbpbl)
Ran off road accidents
Use Ran off road crashes (Hbbgtaj)
Ran off road crashes (Hbbgtaj)
Use For Running off roadway; Roadway departure accidents; Ran off road accidents; Roadway departure crashes
Random access memory (Qtpxmpbdp)
Use For RAM
Random breath tests (Hpmwdr)
Random functions (Uspr)
Random processes
Use Stochastic processes (Usx)
Random sampling (Uswr)
Random variables (Usxt)
Random vibration (Smdvr)
Randomization (Usq)
Range (Statistics) (Usyr)
Range (Vehicles) (Qcpr)
Use For Mileage range
Rangefinders (Dmgr)
Rankine cycle engines
Use Rankine engines (Qtbmbebem)
Rankine engines (Qtbmbebem)
Use For Rankine cycle engines
Ranking (Statistics) (Usr)
Rapid response (Emergencies)
Use Emergency management (Hhgem)
Rapid transit (Aetrd)
Use For Heavy rail transit
Rapid transit cars (Qbfmkhu)
Use For Subway cars
Rapid transit extensions
Use Line extensions (Rail transit) (Pmuyge)
Rapid transit facilities
Use Rail transit facilities (Pmuy)
Rate bureaus (Nsasr)
Rate making (Bbkbu)
Rate of return (Cgafr)
Rate, fare and toll collection (Bbkx)
Rates (Bbkb)
Rates, fares and tolls (Bbk)
Ratings (Epdbc)
Rational formula (Hydraulics) (Jbhnr)
Rationing (Kadmy)
Ratios (Udfbp)
Rats (Jcbtvurs)
Raveling (Pavements)
Use Stripping (Pavements) (Smfs)
Raw materials (Rbmumr)
Rayleigh waves (Srf)
Use For Surface waves
Rayon (Rbmdxcp)
Rays (Physics)
Use Particle beams (Sfx)
Reaction injection molding (Fcbjr)
Reaction rails (Pmudkrbr)
Reaction time (Mxrra)
Reactions (Chemistry)
Use Chemical reactions (Scc)
Reactions in asphalt (Sccw)
Reactions in concrete (Sccy)
Reactive aggregates (Rbmddcmr)
Reactivity
Use Chemical reactivity (Rkcf)
Reactor fuel cycle (Jnrrppnn)
Read only memory (Qtpxmpbds)
Use For ROM
Reading (Mxrdul)
Ready mixed concrete (Rbmdhcbs)
Reagents (Rbctt)
Real estate
Use Real property (Kabqipe)
Real estate development (Cqs)
Real estate industry (Nbrp)
Real property (Kabqipe)
Use For Real estate
Real time control (Dcgt)
Real time data processing (Xbkdr)
Real time information (Xbfr)
Rear end collisions
Use Rear end crashes (Hbbgtr)
Rear end crashes (Hbbgtr)
Use For Rear end collisions
Rear facing restraint systems (Qpqryr)
Rear lighting (Qpumbr)
Rear seat occupants (Mwgr)
Rear seats (Qpeysbr)
Rear suspension systems (Qpih)
Rear wheel drive (Qpobr)
Rearview mirrors (Qpyvr)
Rebar
Use Reinforcing bars (Rbmdxar)
Rebound (Jbgpm)
Rebuilding
Use Reconstruction (Fmbn)
Recall campaigns (Haavr)
Recently qualified drivers (Mtghdfa)
Recession (Kadyr)
Recidivism (Hvr)
Recidivists (Mswac)
Reciprocating engines
Use Piston engines (Qtbmbebjp)
Reckless drivers (Mtghdfcs)
Reclaimed asphalt pavements (Pmrcppbc)
Reclaimed materials
Use Waste products (Rbmdu)
Reclaimed rubber (Rbmdqdrr)
Recommendations (Cwt)
Reconnaissance (Xky)
Reconstruction (Fmbn)
Use For Rebuilding
Reconstruction of accidents
Use Crash reconstruction (Hbxr)
Reconstruction of crashes
Use Crash reconstruction (Hbxr)
Recording (Dsmbr)
Recording instruments (Gur)
Recordkeeping (Cgrk)
Records management (Cgr)
Recreation (Ccbkxr)
Recreational facilities (Pfq)
Recreational roads (Pmrccpp)
Recreational trips (Bmkhq)
Recreational vehicles (Qbddkq)
Recruiting (Ccbbr)
Use For Recruitment
Recruitment
Use Recruiting (Ccbbr)
Rectangles (Upbr)
Rectifiers (Qtbcin)
Recycled asphalt pavement
Use Recycled materials (Rbmdum)
Recycled asphalt pavements
Use Recycled materials (Rbmdum)
Recycled materials (Rbmdum)
Use For Recycled asphalt pavements; Recycled asphalt pavement
Recycling (Jfkyr)
Red (Rkocr)
Red interval (Traffic signal cycle) (Dcmthcskjr)
Red light running (Huvmr)
Redevelopment (Epdrdr)
Reduction (Chemistry) (Sccr)
Reduction gears (Qpoxgs)
Redundancy (Esdr)
Redundant frames
Use Statically indeterminate frames (Pbpbgj)
Reefs (Vmr)
Reference systems
Use Referencing (Esmsfq)
Referencing (Esmsfq)
Use For Reference systems
Refining (Fcbu)
Reflectance (Physics)
Use Reflectivity (Rkor)
Reflecting road studs
Use Reflectorized road markings (Dcmthrurr)
Reflection (Sfrwbr)
Reflection cracking (Smfdpbr)
Reflective signs (Dcmthrkkr)
Reflectivity (Rkor)
Use For Reflectance (Physics)
Reflectometers (Gumepr)
Reflectorized materials (Rbmujv)
Use For Reflectors
Reflectorized paint (Rbmnfnr)
Reflectorized road markings (Dcmthrurr)
Use For Reflecting road studs
Reflectors
Use Reflectorized materials (Rbmujv)
Reforestation (Jnrrkt)
Reformulated gasoline (Rbfumgx)
Refraction (Sfrwbs)
Refractive materials (Rbmujx)
Refractivity (Rker)
Use For Index of refraction
Refractory materials (Rbmdytr)
Refrigerants (Rbmnhr)
Refrigerated cargo (Bhgr)
Refrigerated ships (Qbhdfr)
Refrigeration (Bramr)
Refrigeration (Fcdtcr)
Refrigeration systems (Pbpvcr)
Refrigerator cars (Qbfmkfcr)
Refrigerator trucks (Qbddfkk)
Refrigerators (Qtpmcr)
Refueling (Fmvr)
Refuse (Jfkbp)
Use For Garbage
Refuse disposal
Use Waste disposal (Jfkyd)
Regenerative braking (Smeykr)
Regenerators (Qtbcir)
Regional airlines (Nbbcbd)
Regional analysis (Kxqa)
Regional development (Kxq)
Regional economics (Tgmt)
Regional government (Ngdr)
Regional jets (Qbkfr)
Regional planning (Epdumr)
Regional railroads (Nbbcgf)
Regional transportation (Afg)
Use For Intrastate transportation
Regions (Vwq)
Registers (Xxl)
Registration (Crg)
Registration fees (Cfkr)
Registrations (Crgr)
Registry (Brscr)
Use For Ship registration; Nationality of ships
Regression
Use Regression analysis (Uss)
Regression analysis (Uss)
Use For Regression
Regulation (Crf)
Regulations (Crft)
Regulatory constraints (Crfx)
Regulatory policy
Use Policy (Cra)
Regulatory reform (Crfw)
Regulatory signs (Dcmthrkbr)
Regur
Use Black cotton soils (Rbespbcb)
Rehabilitation (Drivers)
Use Driver rehabilitation (Hawttdu)
Rehabilitation (Maintenance) (Fmbk)
Reheating (Fcdthu)
Reinforced concrete (Rbmdhcbt)
Reinforced concrete bridges (Pdybmmcr)
Reinforced concrete culverts (Pdyrdcr)
Reinforced concrete pavements (Pmrcppbmmr)
Reinforced concrete pipe (Rbmdxnpcr)
Reinforced concrete retaining walls (Pdxrr)
Reinforced earth
Use Mechanically stabilized earth (Rbmdbj)
Reinforced plastics (Rbmdqq)
Reinforcement (Engineering) (Fcbygx)
Use For Steel reinforcement
Reinforcing bars (Rbmdxar)
Use For Rebar
Reinforcing materials (Rbmued)
Reinforcing steel (Rbmdkdfseh)
Relational databases (Xbkgdr)
Relative density
Use Specific gravity (Rkpds)
Relative time (Wr)
Relaxation (Mechanics) (Smber)
Use For Creep recovery; Stress relaxation
Relaxation tests (Gbgt)
Relays (Electricity) (Qtbcr)
Reliability (Qvr)
Reliability (Statistics) (Ust)
Relief valves
Use Pressure relief valves (Qtbmyxp)
Relieving platforms (Pdxtr)
Relocation (Facilities) (Esmkr)
Relocation assistance (Cfhgffr)
Remanufacturing (Cpmt)
Remolded clay soils (Rbmdbmc)
Remolded soils (Rbmdbm)
Remote checkin
Use Automated checkin (Bdke)
Remote control (Dcgu)
Remote detectors
Use Remote sensing (Dmbr)
Remote sensing (Dmbr)
Use For Remote detectors; Remote sensors
Remote sensors
Use Remote sensing (Dmbr)
Remotely piloted aircraft (Qbkdr)
Renewable energy sources (Jnaer)
Rent (Cqdr)
Rental cars (Qbddhmckt)
Reorganization (Cygd)
Repair
Use Repairing (Fmbr)
Repair and maintenance businesses (Nbm)
Use For Repair industry
Repair industry
Use Repair and maintenance businesses (Nbm)
Repairing (Fmbr)
Use For Repair
Repaving
Use Resurfacing (Fmuhpr)
Repeal (Crebr)
Repeat offenders (Mswab)
Repeated loads (Smimr)
Use For Cyclic loads
Replacement (Chemistry) (Sccs)
Replacement of equipment
Use Equipment replacement (Fmy)
Report forms
Use Forms (Documents) (Xxu)
Reports (Xxr)
Reports of visits (Xxrv)
Use For Trip reports (Research)
Repositories (Pfsr)
Representative samples (Statistics) (Uswt)
Representative samples (Testing) (Gvmx)
Reprints (Xxbr)
Reproduction (Biology) (Jdr)
Requests for proposals
Use Solicitations (Cuas)
Reregulation (Crfr)
Rescue equipment (Qtpser)
Use For Lifesaving equipment
Research (Xkb)
Research and educational facilities (Pfr)
Research management (Cw)
Research projects (Xkbr)
Research reports (Xxrr)
Research ships (Qbhkr)
Researchers (Mssr)
Reservation systems (Bbps)
Reservations (Bbp)
Reservoirs (Pmhsfr)
Residential areas (Vwv)
Residential buildings
Use Dwellings (Pff)
Residential location (Cqm)
Use For Place of residence
Residential streets (Pmrccpr)
Residents (Mkhr)
Residual fuels (Rbfpr)
Residual oils (Rbmdpps)
Residual shear strength (Rkmarr)
Residual soils (Rbesjr)
Residual strength (Rkmam)
Residual stress (Smvq)
Residues
Use Waste products (Rbmdu)
Resilience (Materials) (Rkmm)
Resins (Rbmdqr)
Resistance (Electricity) (Sew)
Use For Electrical resistance
Resistance (Mechanics) (Rkmkk)
Use For Damping coefficient; Damping constant; Mechanical resistance
Resistance tests (Gbgvr)
Resisting moments (Smumr)
Resistivity (Electricity)
Use Electrical resistivity (Rkeh)
Resistivity method (Jnrrbegr)
Use For Electrical resistivity method; Resistivity surveys
Resistivity surveys
Use Resistivity method (Jnrrbegr)
Resistors (Qtbcs)
Resonance (Sex)
Resonance frequency (Sexf)
Use For Resonant frequency
Resonant frequency
Use Resonance frequency (Sexf)
Resource allocation (Epdrq)
Resource development (Jnrr)
Resource development and utilization (Jnr)
Resource extraction (Jnrrb)
Resource utilization (Jnru)
Resources
Use Natural resources (Jn)
Respiration
Use Respiratory system (Myvr)
Respiratory system (Myvr)
Use For Respiration
Rest areas
Use Roadside rest areas (Pmruq)
Rest periods (Ccbkhr)
Restaurants (Pfcr)
Use For Eating places
Restoration ecology (Tpdgr)
Restraint systems (Qpqr)
Restructuring (Cyf)
Resurfacing (Fmuhpr)
Use For Repaving
Resuscitation (Hper)
Retail trade (Cta)
Retaining walls (Pdxr)
Retardants
Use Retarders (Chemistry) (Rbctkr)
Retarder control (Dctr)
Retarders (Chemistry) (Rbctkr)
Use For Retardants
Retarders (Concrete) (Rbctkrc)
Retarders (Concrete) (Rbmdhcjr)
Retirement (Ccbur)
Retraining (Cetr)
Retreaded tires (Qpmtbr)
Retrofitting (Fmbm)
Retroreflection (Sfrwbrt)
Retroreflectivity (Rkorr)
Retroreflectors (Rbmujvr)
Return on investment (Cgaft)
Revealed preferences (Kadbpr)
Revegetation (Jnrrkr)
Revenue management
Use Yield management (Cfady)
Revenues (Cfa)
Reverberation (Sbvr)
Reverse commuting (Bmnb)
Reversible motors (Qtbmbmp)
Reversible traffic lanes (Pmrcpmr)
Reversing (Driving)
Use Backing (Driving) (Dcnbsta)
Revetments (Pmhdr)
Reviews (Xxq)
Revocation (Crhymr)
Reynolds number (Sav)
Reynolds stress (Smvr)
Use For Eddy stress
RFID
Use Radio frequency identification (Dmbjs)
RFPs
Use Solicitations (Cuas)
Rheological properties (Rkmls)
Rheology (Tpxsr)
Rheometers (Gumyo)
Ribs (Myhr)
Ribs (Aircraft) (Qpgybb)
Rickshaws (Qbdhr)
Ride quality (Bbs)
Ridership (Bfhmr)
Use For Patronage (Transit ridership)
Ridesharing (Bmr)
Riding qualities (Qcpt)
Right angle collisions
Use Right angle crashes (Hbbgtsa)
Right angle crashes (Hbbgtsa)
Use For Right angle collisions
Right of way (Land) (Cqe)
Right of way (Traffic) (Crftrr)
Right turn lanes (Pmrcpmxr)
Right turn on red (Bthurr)
Right turns (Bthur)
Rigid pavements (Pmrcppbdr)
Rigid structures (Pbcr)
Rigidity
Use Stiffness (Rkmq)
Ring roads
Use Beltways (Pmrccnf)
Ring stress (Jbgyrr)
Rings (Devices) (Qtput)
Ripping
Use Tearing (Smft)
Riprap (Pmhdt)
Riser pipe (Rbmdxnpr)
Risers (Geology) (Vgfhsr)
Risk (Hk)
Risk analysis (Cnba)
Risk assessment (Hka)
Use For Vulnerability assessment
Risk management (Cnb)
Risk taking (Mxpbr)
River basins (Vgfr)
River currents (Jbhl)
River flow
Use Streamflow (Jbhi)
River gages
Use Stream gages (Gumys)
River ice (Jbhyjpr)
River ports (Pmhbmpcm)
Use For Inland terminals; Inland ports
River protective works
Use Coast and river protective works (Pmhd)
River regulation (Fcfhhr)
Riverbanks
Use Banks (Waterways) (Pmhjyb)
Riverbeds
Use Streambeds (Pmhjyes)
Rivers (Vsjf)
Rivets (Rbmnkr)
Ro/ro shipping
Use Roll on roll off shipping (Aesfr)
Ro/ro ships
Use Roll on roll off ships (Qbhdfp)
Road authorities
Use Highway departments (Nggkd)
Road construction (Fcff)
Use For Highway construction
Road construction industry (Nceh)
Road construction workers (Msekra)
Road crews (Msekr)
Road curves
Use Highway curves (Pmrckc)
Road design
Use Highway design (Esush)
Road embankments
Use Embankments (Pdxe)
Road engineering
Use Highway engineering (Ttkfwh)
Road freight vehicles
Use Trucks (Qbddf)
Road humps (Artificial)
Use Speed control humps (Dcmthrx)
Road kill (Hjhxr)
Road machinery
Use Roadbuilding machinery (Qtpbcr)
Road maintenance
Use Highway maintenance (Fmuh)
Road marking materials (Rbmumtths)
Road marking tapes (Rbmumtthsu)
Road markings (Dcmthru)
Use For Pavement markings; Traffic markings; Carriageway markings
Road materials (Rbmumtth)
Use For Roadbuilding materials; Highway materials
Road meters (Gumsrr)
Use For Roughometers
Road pricing (Cfspr)
Use For Value pricing (Road pricing)
Road rage (Mxqar)
Road raters (Gumsjr)
Road rollers (Qtpbcbrr)
Road rollers (Qtpbcrr)
Road safety
Use Highway safety (Haath)
Road shoulders (Pmrcps)
Use For Verge; Shoulders (Roads)
Road studs
Use Raised road markings (Dcmthrur)
Road surfaces
Use Surface course (Pavements) (Pmrcpppmb)
Road tankers
Use Tank trucks (Qbddfkt)
Road tests (Gbbvr)
Road transport informatics
Use Intelligent transportation systems (Dtv)
Road transportation
Use Highway transportation (Aegh)
Road weather information systems (Dsfpdp)
Use For RWIS
Roadbase
Use Base course (Pavements) (Pmrcpppme)
Roadbed materials
Use Subgrade materials (Rbmuejpt)
Roadbeds
Use Subgrade (Pavements) (Pmrcpppmr)
Roadblocks (Hrkr)
Roadbuilding machinery (Qtpbcr)
Use For Road machinery
Roadbuilding materials
Use Road materials (Rbmumtth)
Roads (Pmrc)
Roadside (Pmrcpr)
Roadside advertising (Chqr)
Use For Billboards; Outdoor advertising
Roadside animals
Use Roadside fauna (Jcmbrf)
Roadside delineators
Use Highway delineators (Dcmthre)
Roadside development
Use Roadside improvement (Esumr)
Roadside fauna (Jcmbrf)
Use For Roadside animals
Roadside flora (Jcmbrm)
Use For Roadside plants
Roadside flora and fauna (Jcmbr)
Roadside hazards (Hbkgar)
Roadside improvement (Esumr)
Use For Roadside development
Roadside memorials (Pmrcprm)
Roadside plants
Use Roadside flora (Jcmbrm)
Roadside recovery areas
Use Clear zones (Pmrcprc)
Roadside rest areas (Pmruq)
Use For Rest areas
Roadside structures (Pmrcprs)
Roadside to vehicle communications
Use Vehicle to infrastructure communications (Dsbnu)
Roadway
Use Traffic lanes (Pmrcpm)
Roadway departure accidents
Use Ran off road crashes (Hbbgtaj)
Roadway departure crashes
Use Ran off road crashes (Hbbgtaj)
Roadway guidance markers (Dcnsyhr)
Use For Guidance references (Highways); Magnetic markers (Highways)
Roadway lighting
Use Street lighting (Pmpv)
Roadwork
Use Highway maintenance (Fmuh)
Robot vision (Dmbjjcr)
Robotics (Ttkns)
Robots (Dcjr)
Rock
Use Rocks (Rber)
Rock asphalt
Use Asphalt rock (Rbeusbf)
Rock bolting (Fcacjbr)
Rock core (Rberbc)
Rock crystals (Rberrtr)
Use For Crystals
Rock cutting
Use Rock excavation (Fcfxer)
Rock disintegration
Use Rock fracture (Smfdr)
Rock drilling (Fcfxerr)
Rock excavation (Fcfxer)
Use For Rock cutting
Rock fills
Use Rockfills (Pdxtfr)
Rock fracture (Smfdr)
Use For Rock disintegration; Rupturing
Rock in building (Rbmddr)
Rock jointing (Smfdrj)
Use For Jointed rock; Joints (Geology)
Rock mechanics (Tpnps)
Rock pressure
Use Ground pressure (Smipcg)
Rock salt
Use Halite (Rberrp)
Rock slopes (Vgfhss)
Rockbolts (Rbmnkbr)
Rocket sleds (Qbddkxdr)
Rockfalls (Jbgemq)
Rockfill dams (Pmhmbr)
Rockfills (Pdxtfr)
Use For Rock fills
Rocking (Qdrr)
Rocking (Smdpq)
Rocks (Rber)
Use For Rock
Rocks by properties (Rbert)
Rockslides (Jbgemr)
Rodents (Jcbtvur)
Rods (Rbmdxas)
Roll bars (Qpqt)
Roll on roll off shipping (Aesfr)
Use For Ro/ro shipping
Roll on roll off ships (Qbhdfp)
Use For Ro/ro ships
Rolled asphalt (Rbmdpbr)
Roller bearings (Qtbmydsr)
Roller compacted concrete (Rbmdhcbu)
Roller compacted concrete pavements (Pmrcppbmms)
Rollers (Qtpbcbr)
Rolling (Qdsm)
Rolling (Smdpr)
Rolling contact (Smdr)
Use For Wheel rail interaction; Tire pavement interface
Rolling friction (Smdjr)
Rolling load tests
Use Load tests (Gbgp)
Rolling resistance (Smdjrr)
Rolling stock (Qbdb)
Rollover accidents
Use Rollover crashes (Hbbgtat)
Rollover crashes (Hbbgtat)
Use For Rollover accidents
ROM
Use Read only memory (Qtpxmpbds)
Roofing
Use Roofs (Pbpbp)
Roofs (Pbpbp)
Use For Roofing
Rooms (Pbpbm)
Roots (Jcbpyr)
Rope (Rbmdxqr)
Rope, wire and cable (Rbmdxq)
Rotary combustion engines
Use Wankel engines (Qtbmbebjw)
Rotary drilling (Fcamr)
Rotary engines (Qtbmbebjr)
Rotary intersections
Use Traffic circles (Pmrcpjfcm)
Rotary wing aircraft (Qbkmr)
Rotation (Smdps)
Rotation moment
Use Torque (Smdpst)
Rotational landslides (Jbgemt)
Rotor blades (Qphrb)
Rotors (Qphr)
Use For Helicopter rotors; Impellers
Roughness (Rkptr)
Use For Unevenness; Surface roughness
Roughness coefficient (Rkwr)
Roughometers
Use Road meters (Gumsrr)
Roundabouts (Pmrcpjfcmr)
Use For Modern roundabouts
Rounded aggregates (Rbmddcjr)
Route (Itinerary)
Use Itinerary (Bkrb)
Route choice (Bkr)
Use For Route selection
Route guidance (Dsfpdr)
Use For In vehicle route guidance
Route selection
Use Route choice (Bkr)
Route signs (Dcmthrkbgr)
Route surveying (Esmsrr)
Routes (Bbhe)
Routes and routing (Bbh)
Routing (Bbhr)
RTI
Use Intelligent transportation systems (Dtv)
Rubber (Rbmdqdr)
Rubber coatings (Rbmnfcur)
Rubber compounds (Rbmdqdrc)
Rubber tires
Use Tires (Qpmt)
Rubberized asphalt
Use Asphalt rubber (Rbmdpbyper)
Rubberized bitumen (Rbmdpcr)
Rubble (Rbmdup)
Rubble mound breakwaters (Pmhdcr)
Rubblization
Use Comminution (Fcbb)
Rudders (Qpjyq)
Rumble strips (Dcmthruu)
Run cutting (Brubc)
Run through trains (Brratr)
Running off roadway
Use Ran off road crashes (Hbbgtaj)
Running speed (Bthsr)
Running time (Wrm)
Runoff (Jbhp)
Use For Storm water runoff; Stormwater runoff
Runway incursions (Hbbar)
Runway overruns (Hbbat)
Runways (Aeronautics)
Use Airport runways (Pmfcgmr)
Rupture surfaces (Jbgyp)
Rupturing
Use Rock fracture (Smfdr)
Rural areas (Vwr)
Rural development (Kxr)
Rural highways (Pmrccer)
Rural transit (Afma)
Rural transportation (Afm)
Rural travel (Bmfr)
Rush hour
Use Peak hour traffic (Btbp)
Rust control
Use Rust prevention (Fccmcr)
Rust prevention (Fccmcr)
Use For Rust control; Rustproofing
Rusting (Scphr)
Rustproofing
Use Rust prevention (Fccmcr)
Ruts (Pavements) (Pmrcpppmbyr)
Use For Wheeltracks
Rutting (Smbr)
RWIS
Use Road weather information systems (Dsfpdp)

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