Glossary of road transport terms
Terminology related to road transport—the transport of passengers or goods on paved routes between places—is diverse, with variation between dialects of English. There may also be regional differences within a single country, and some terms differ based on the side of the road traffic drives on. This glossary is an alphabetical listing of road transport terms.
0–9
;2+1 road;2-1 road
;2+2 road
;3-way junction or 3-way intersection
;5-1-1
A
;Access road;Advisory speed limit
;All-way stop or four-way stop
;Alternate route or optional route
;Ambulance
;Annual average daily traffic
;Arterial road or arterial thoroughfare
;At-grade intersection
;Automobile
;Automotive vehicle
;Autonomous vehicle
;Auxiliary route
B
;Backroad;Barrier toll system or open toll system
;Beltway
;Bicycle, bike, or cycle
;Bicycle boulevard
;Bike freeway, cycling superhighway, fast cycle route, or bicycle highway
;Bike lane or cycle lane
;Boom barrier or boom gate
;Bottleneck
;Botts' dots
;Boulevard
;Box junction
;Broken U-turn
;Bus
;Bus lane
;Bus rapid transit, BRT, busway, or transitway
;Bus station or bus depot
;Bus stop
;Business route or city route
;Butterfly junction
;Button copy
;Bypass
C
;Cab;Cant or camber
;Car or automobile
;Car crash or car accident
;Carriageway or roadway
;Cashless tolling
;Cat's eye
;Central reservation
;Circumferential highway
;City route
;Clean vehicle
;Climbing lane
;Closed toll collection system
[Image:Cloverleaf interchange.svg|thumb|Diagram of a cloverleaf interchange]
;Cloverleaf interchange or cloverleaf junction
;Coastal evacuation route
;Collector–distributor lanes
;Collector road or distributor road
;Commercial vehicle
;Concurrency
;Cone
;Confirming marker
;Congestion
;Congestion pricing
;Connector or cutoff
;Constitutional route
;Construction area, construction zone, work area, or work zone
;Continuous-flow intersection, CFI, crossover displaced left-turn, XDL, or DLT
;Continuous footway
;Continuous green T-intersection
;Continuous pavement
;Contraflow lane reversal
;Control city
;Controlled-access highway, motorway, or freeway
;Copenhagen crossing
;The corduroy
;Country lane
;County highway, county road, or county route
;Couplet
;Crossbuck
;Crossing guard, lollipop man/lady, crosswalk attendant or school road patrol
;Crossroad
;Crosswalk
;Cul-de-sac, dead end, closed, no through road, no exit, court, or no outlet
;Curb or kerb
;Cycle lane
;Cycling superhighway
;Cyclist
D
;Dead end;Decommissioned highway
;Demountable copy
;Detour
;Diamond interchange
;Directional interchange
;Distributor road
;Diverging diamond interchange, DDI, double crossover diamond interchange, or DCD
;DLT
;Drawbridge
;Driverless car
;Driver's license or driving licence
;Drivers' working hours
;Driveway or drive
;Driving under the influence or DUI
;Dual carriageway or divided highway
;Dynamic message sign
E
;Electronic toll collection;Elevated highway
;Emergency vehicle
;Escape lane or emergency escape ramp
;Evacuation route
;Exit number
;Expressway
F
;Farm-to-market road, ranch-to-market road, farm road, or ranch road;Fast cycle route
;Fire engine, fire truck, or fire lorry
;Flagger or flagman
;Freeway
;Frontage road, access road, service road, or parallel road
;Floodway
;Flyover
;Footpath or footway
;Fore Street
;Fork
;Four-way stop
G
;Gantry;Ghost island
;Gore, gore point, gore zone, or merge nose
;Grade separation
;Green lane
;Green vehicle, clean vehicle, eco-friendly vehicle, or environmentally friendly vehicle
;Gridlock
;Grid plan, grid street plan, or gridiron plan
;Growlers
H
;Hairpin turn, hairpin bend, hairpin corner, or hairpin curve;Haulage
;HAWK beacon or pedestrian hybrid beacon
;High-occupancy vehicle lane or HOV lane
;High-occupancy toll lane or HOT lane
;High street
;High-T intersection
;Highway
;Highway hypnosis or white line fever
;Highway patrol
;Highway shield or route marker
;Holiday route
;Hook turn
;Hurricane evacuation route, coastal evacuation route, or evacuation route
I
;Idaho stop;Interchange
;Intersection
J
;Jersey barrier, Jersey wall, K-rail, or Ontario tall wallImage:Jughandles.jpg|thumb|A pair of jughandles in New Jersey
;J-turn
;Jughandle or Jersey left
;Junction
K
;Kerb;K-rail
;K-turn
L
;Land train;Lane
;Lane splitting
;Legislative route
;Left-in/left-out
;Level crossing or railroad crossing
;Level of service
;License plate
;Limited-access road or expressway
;Link road
;Local-express lanes or collector–distributor lanes
;Lollipop man/lady
;Loop Around
;Lorry
;Lorry driver
M
;Mainline;Main street, high street or fore street
;Manual on Uniform Traffic Control Devices
;Mass transit
;Matrix sign
;Median strip or central reservation
;Merge
;Merge nose
;Michigan left
;Milestone, mile markers, mileposts or mile post
;Mobility service provider
;Moped
;Motorcycle
;Motorized bicycle
;Motor scooter
;Motor vehicle, motorized vehicle, or automotive vehicle
;Motorway
;Moveable bridge or drawbridge
;Move over law
;Musical road
N
;National highway;No name exit
;No through road, no exit, or no outlet
;Number plate
O
;One-way pair, one-way couple, or couplet;On-street running
;Ontario tall wall
;Open road tolling
;Open toll system
;Optional route
;Orbital
;Overpass
;Overtaking or passing
;Overtaking lane
P
;Painted island;Passing
;Passing lane or overtaking lane
;Parallel road
;Parkway
;Partial cloverleaf interchange, or parclo
;Pedestrian crossing or crosswalk
;Peak hour
;Pedestrian hybrid beacon
;Pelican crossing
;Pittsburgh left
;Pothole
;Primitive road
;Priority or right of way
;Private road
;Provincial highway, provincial road, or provincial route
;Public transport, public transportation, public transit, mass transit, or transit
;Pylon
Q
;Quadrant roadway intersection or quadrant intersectionR
;Railroad crossing;Raised pavement marker or raised reflective marker
;Ramp
;Ramp meter
;Ranch-to-market road or ranch road
;Reassurance marker or confirming marker
;Red light camera
;Rest area, travel plaza, rest stop, or service area
;Restricted crossing U-turn or reduced conflict intersection
;Reversible lane or tidal flow
;Ridesharing company, transportation network company, or mobility service provider
;Right-in/right-out or left-in/left-out
;Right-of-way
;Ring road, beltway, circumferential highway, or orbital
;Road
;Road diet, lane reduction, or road rechannelization
;Roadkill
;Road pricing or road user charges
;Road rage
;Road sign
;Road surface or pavement
;Road surface marking
;Road train or land train
;Roadway
;Roundabout, rotary, or traffic circle
;Route marker
;Route number, road number, or route identifier
;Rumble strips, sleeper lines, rumple strips, audible lines, the corduroy, or growlers
;Runaway truck ramp, runaway truck lane, escape lane, emergency escape ramp or truck arrester bed
;Rush hour or peak hour
S
;Scenic route, tourist road, tourist route, tourist drive, holiday route, theme route, or scenic byway;School bus
;School road patrol
;Scooter or motor scooter
;Seagull intersection, continuous green T-intersection, turbo-T, or high-T intersection
;Sealed road
;Self-driving car, autonomous vehicle, or driverless car
;Service area
;Service road
;Side road entry treatment, SRET, continuous footway, continuous pavement, Copenhagen crossing
;Sidewalk, footpath, footway, or pavement
;Shoulder
;Shunpiking
;Single carriageway or undivided highway
;Single point urban interchange or SPUI
;Sleeper lines
;Slip road or ramp
;Spaghetti junction
;Special route
;Speed bump, speed hump, speed ramp, speed cushion, or speed table
;Speeding
;Speed limit
;Spur route
;SRET
;Stack interchange, butterfly junction, or directional interchange
;State highway, state road, state route, provincial highway, provincial road, or provincial route
;Stop sign
;Straight-line diagram or strip map
;Street
;Streetcar
;Street name sign or street sign
;Street running or on-street running
;Stroad
;Stub ramp, stub street, stub-out, stub, or ski jump
[Image:Superstreet.svg|thumb|Diagram of a superstreet intersection]
;Superstreet, restricted crossing U-turn, J-turn, or reduced conflict intersection
;Super two, super two-lane highway, or wide two lane
T
;Tailgating;Taxicab, taxi, or cab
;Texas U-turn, Texas turnaround, or loop around
;Three-point turn, Y-turn, K-turn, or broken U-turn
;Three-way junction, 3-way junction, 3-way intersection, Y junction, Y intersection, T junction, or T intersection
;Through traffic
;Ticket system or closed toll collection system
;Tollbooth, toll plaza, toll booth, or toll gate
;Toll road, turnpike, or tollway
;Tourist road, tourist route, tourist drive, or theme route
;Traffic
;Traffic bottleneck
;Traffic calming
;Traffic circle
;Traffic collision, motor vehicle collision, car crash or car accident
;Traffic cone or pylon
;Traffic congestion
;Traffic enforcement camera
;Traffic guard, traffic controller, flagman, or flagger
;Traffic island, painted island, or ghost island
;Traffic light
;Traffic police, traffic officers, traffic cops or traffic enforcers
;Traffic sign or road sign
;Tram, trolley, or streetcar
;Transit
;Transitway
;Transportation network company
;Travel plaza
;Truck or lorry
;Truck arrester bed
;Truck driver, trucker or truckie, lorry driver, or driver
;Truck route
;Trumpet interchange
;Turbo-T
;Turnaround
;Turn off to stay on
;Turn on red
;Two-lane expressway
;Two-lane road
U
;Underpass;Undivided highway
;Unsigned highway
;Unused highway, ski jump, stub ramp, stub street, stub-out, or stub
;U-turn
V
;Variable-message sign, dynamic message sign, or matrix sign;Vehicle
;Vehicle for hire
;Vehicle registration plate, license plate or number plate
;Vienna Convention on Road Signs and Signals
;Vienna Convention on Road Traffic
W
;Weave;Weigh station
;White line fever
;Wide two lane
;Wildlife crossing
;Work area or work zone
;Wrong-way concurrency
X
;XDL;Xing or x-ing
Y
;Yellow trap;Y junction or Y intersection
;Yield sign
;Y-turn