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+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
;Annual average daily traffic
;Arterial road or arterial thoroughfare
;At-grade intersection
;Automobile
;Automotive vehicle
;Autonomous vehicle
;Auxiliary route
B
;Barrier toll system or open toll system;Beltway
;Bicycle or cycle
;Bike lane or cycle lane
;Bottleneck
;Botts' dots
;Boulevard
;Box junction
;Bus
;Bus lane
;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
;Closed toll collection system
;Cloverleaf interchange or cloverleaf junction
;Coastal evacuation route
;Collector–distributor lanes
;Concurrency
;Congestion
;Congestion pricing
;Connector or cutoff
;Constitutional route
;Continuous-flow intersection, CFI, crossover displaced left-turn, XDL, or DLT
;Continuous green T-intersection
;Contraflow lane reversal
;Control city
;Controlled-access highway, motorway, or freeway
;The corduroy
;County highway, county road, or county route
;Couplet
;Crossroad
;Crosswalk
;Cul-de-sac, dead end, closed, no through road, no exit, court, or no outlet
;Cycle lane
;Cyclist
D
;Dead end;Decommissioned highway
;Demountable copy
;Detour
;Diamond interchange
;Directional interchange
;Diverging diamond interchange, DDI, double crossover diamond interchange, or DCD
;DLT
;Drawbridge
;Driverless car
;Driver's license or driving licence
;Drivers' working hours
;Dual carriageway or divided highway
;Dynamic message sign
E
;Electronic toll collection;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;Freeway
;Frontage road, access road, service road, or parallel road
, Western Australia
;Floodway
;Flyover
;Footpath or footway
;Fork
;Four-way stop
G
;Gantry;Ghost island
;Gore, gore point, gore zone, or merge nose
;Grade, slope, incline, gradient, pitch or rise
;Grade separation
;Gridlock
;Growlers
;Guard rail, guardrail, guide rail, or railing
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-T intersection
;Highway
;Highway hypnosis or white line fever
;Highway shield or route marker
;Holiday route
, Australia
;Hook turn
;Hurricane evacuation route, coastal evacuation route, or evacuation route
I
;Idaho stop;Incline
;Interchange
;Intersection
J
;Jersey barrier, Jersey wall, K-rail, or Ontario tall wall;J-turn
;Jughandle or Jersey left
;Junction
K
;K-rail;K-turn
L
;Land train;Lane
;Lane splitting
;Legislative route
;Left-in/left-out
;Level crossing or railroad crossing
;Level of service
;Limited-access road or expressway
;Local-express lanes or collector–distributor lanes
;Loop Around
;Lorry
;Lorry driver
M
;Mainline;Manual on Uniform Traffic Control Devices
;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 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
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
P
;Painted island;Parallel road
;Parkway
;Partial cloverleaf interchange, or parclo
;Pavement
;Pedestrian crossing or crosswalk
;Peak hour
;Pedestrian Hybrid Beacon
;Pitch
;Pothole
;Priority or right of way
;Provincial highway, provincial road, or provincial route
Q
;Quadrant roadway intersection or quadrant intersectionR
;Railing;Railroad crossing
;Raised pavement marker or raised reflective marker
;Ramp
;Ramp meter
;Ranch-to-market road or ranch road
;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
;Rise
;Road
;Road diet, lane reduction, or road rechannelization
;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
;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
;Sidewalk, footpath, footway, or pavement
;Shoulder
;Shunpiking
;Single carriageway or undivided highway
;Single point urban interchange or SPUI
;Sleeper lines
;Slip road or ramp
;Slope
;Spaghetti Junction
;Special route
;Speed bump, speed hump, speed ramp, speed cushion, or speed table
;Speed limit
;Spur route
;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 running or on-street running
;Stub ramp, stub street, stub-out, stub, or ski jump
;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 or K-turn
;Three-way junction, 3-way junction, 3-way intersection, Y junction, Y intersection, T junction, or T intersection
;Thru traffic
;Ticket system or closed toll collection system
;Toll road, turnpike, or tollway
;Tourist road, tourist route, tourist drive, or theme route
;Traffic
;Traffic bottleneck
;Traffic circle
;Traffic collision, motor vehicle collision, car crash or car accident
;Traffic congestion
;Traffic island, painted island, or ghost island
;Traffic light
;Traffic sign or road sign
;Tram, trolley, or streetcar
;Transportation network company
;Travel plaza
;Truck or lorry
;Truck arrester bed
;Truck driver, trucker or truckie, lorry driver, or driver
;Truck route
;Turnaround
;Turn off to stay on
;Turbo-T
;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
;Vienna Convention on Road Signs and Signals
;Vienna Convention on Road Traffic
W
;Weave;Weigh station
;White line fever
;Wide two lane
;Wrong-way concurrency
X
;XDL;Xing or x-ing
Y
;Yellow trap;Y junction or Y intersection
;Yield sign