- rehabilitation ballasting
- reheat
- relay
- relay rack
- release time
- relief srew
- relief train
- relief well
- repair track
- repeating signal
- replacement rail
- required flightpath
- rescue
- rescue boat
- rescue helicopter
- reserve buoyancy
- reserve siding
- reserver
- reshipment
- reshipping
- residential land
- resilient fastener
- resilient wheel
- restored profile
- rest period
- rest skids
- retaining valve
- retarder
- return cargo
- reversible lane
- reversing station
- reward
- rigger
- rigging position
- rigid axle
- rigid skirt
- reverse sheer
- reversible seat
- reversible train
- reversing level
- reversing rail
- reversing switchgroup
- rheostatic brake
- rhumb
- ribband
- ribbon rails
- rider plate
- rip tide
- rise
- rise time
- river boat
- river bus
- river ferry
- river fleet
- river navigation
- river traffic
- river tug
- retractable table
- return voyage
- reverse braking
- reverse pitch
- revolving seat
- rheostatic braking
- rhumb line
- ride comfort
- resilient rail
- responder
- restrictive endorsement
- retaining ring
- retarder equipment
- return journey
- ring bolt
- ring frame
- rivet construction
- ro-ro
- return ticket
- reverse
- reversible pallet
- reversing shaft
- ride index
- rigging
- rigging screw
- rigid base
- road
- road building
- road camber
- road communication
- road grader
- road haulier
- road jam
- road junction
- road locomotive
- road making
- road map
- road message
- road network
- road news
- road plough
- road ripper
- road system