Short answer: Transport is one of IELTS's most predictable Writing and Speaking themes, so precise words such as congestion, infrastructure, sustainable and viable are among the fastest ways to lift your Lexical Resource band.
The 30 words below each come with a meaning, a natural collocation and an example sentence you can adapt straight into an answer.
Transport questions recur throughout IELTS: traffic congestion and how to reduce it, the trade-offs between public transport and private cars, road safety, air travel and the environment, and how to fund infrastructure.
Because the theme is so predictable, the vocabulary is learnable in advance — and a candidate who writes about easing congestion, investing in infrastructure and promoting sustainable mobility instead of "too many cars" and "building roads" signals a higher band immediately.
This guide gives you 30 genuine Band 7+ transport words, each with the collocation that makes it usable and an example sentence in an essay-style context.
Why topic vocabulary lifts your Lexical Resource band
In both Writing and Speaking, Lexical Resource is one of four assessment criteria, each carrying equal weight, so it accounts for a full quarter of your mark on those papers.
The public band descriptors state that Band 7 requires "a sufficient range of vocabulary to allow some flexibility and precision" and the use of "less common lexical items… with some awareness of style and collocation", as set out in the official IELTS Writing Task 2 band descriptors.
Preparing topic vocabulary in advance is the most efficient way to meet that standard on a predictable subject like transport.
The honest caveat is that the descriptors reward accuracy, not decoration. A less common word placed in the wrong collocation — "do a congestion", "a big infrastructure" — reads as reach without control and can lower your band rather than raise it.
That is why every entry below pairs the word with its natural partners. For a structured month of building this kind of active, in-context vocabulary across topics, follow our 30-day vocabulary plan.
30 Band 7+ Transport words
Read down the table for the meaning, then across to the collocation and example — the example shows the word doing the job it would do in a real answer.
| Word | Meaning | Collocation / common usage | Example sentence |
|---|---|---|---|
| congestion | severe overcrowding of traffic on roads | traffic congestion, ease congestion | Building more roads rarely eases traffic congestion for long, because extra capacity attracts more drivers. |
| infrastructure | the basic physical systems and networks a country runs on | transport infrastructure, invest in infrastructure | Sustained investment in transport infrastructure is essential if cities are to keep pace with population growth. |
| commute | to travel regularly between home and work | daily commute, commute to work | A long daily commute by car adds to both congestion and household stress. |
| pedestrian | a person travelling on foot | pedestrian zone, pedestrian safety | Widening the pavements and creating a pedestrian zone made the city centre far safer. |
| emissions | gases released by vehicles into the atmosphere | vehicle emissions, cut emissions | Electric buses are being introduced to cut the vehicle emissions that pollute urban air. |
| sustainable | able to continue long-term with little environmental harm | sustainable transport, sustainable mobility | Cycling and public transport are the pillars of any sustainable transport strategy. |
| gridlock | a complete standstill of road traffic | total gridlock, cause gridlock | A single accident on the ring road can bring the whole city to gridlock. |
| logistics | the detailed organisation of moving goods and supplies | freight logistics, logistics network | Efficient logistics networks allow perishable goods to reach markets thousands of miles away. |
| subsidise | to support financially so a service costs users less | subsidise public transport, heavily subsidised | Many governments subsidise public transport to make it affordable and reduce car use. |
| viable | capable of working successfully; practical | a viable alternative, economically viable | High-speed rail is a viable alternative to flying only over medium distances. |
| deterrent | something that discourages a particular action | act as a deterrent, a strong deterrent | High parking charges act as a deterrent to driving into the centre. |
| accessibility | the quality of being easy to reach, enter or use | improve accessibility, accessibility for all | Lifts and ramps at every station improve accessibility for disabled passengers. |
| fatality | a death caused by an accident or disaster | road fatalities, reduce fatalities | Lower speed limits in residential areas have reduced road fatalities significantly. |
| toll | a charge paid for using a road, bridge or tunnel | a toll road, impose a toll | Introducing a toll on the motorway funded its upkeep and discouraged unnecessary trips. |
| mobility | the ability to move or travel freely | urban mobility, mobility options | Shared bikes and scooters have expanded urban mobility for short journeys. |
| aviation | the activity and industry of flying aircraft | the aviation industry, aviation fuel | The aviation industry faces growing pressure to reduce its carbon footprint. |
| freight | goods transported in bulk by road, rail, sea or air | rail freight, freight transport | Shifting freight from lorries to rail would ease congestion on major roads. |
| autonomous | (of a vehicle) able to drive itself without a human | autonomous vehicles, autonomous driving | Autonomous vehicles could reduce accidents caused by human error, though the technology is unproven at scale. |
| deteriorate | to become progressively worse in quality or condition | road surfaces deteriorate, infrastructure deteriorates | Without maintenance, road surfaces deteriorate rapidly under heavy traffic. |
| incentive | something that motivates a particular behaviour | financial incentive, offer an incentive | Tax incentives encourage commuters to switch to electric cars. |
| carpooling | the practice of sharing a car journey to cut costs and traffic | a carpooling scheme, encourage carpooling | A workplace carpooling scheme can noticeably cut the number of cars on the road. |
| thoroughfare | a main road or public route through a place | a busy thoroughfare, a main thoroughfare | The medieval street was never designed to serve as a main thoroughfare for modern traffic. |
| capacity | the maximum number of people or goods that can be carried | passenger capacity, at full capacity | The new metro line already runs at full capacity during rush hour. |
| arterial | (of a road) forming a main route in a network | an arterial road, an arterial route | An accident on an arterial road quickly paralyses the surrounding network. |
| detour | a longer, alternative route taken to avoid something | take a detour, a lengthy detour | Roadworks forced drivers to take a lengthy detour through the side streets. |
| haulage | the commercial transport of goods, especially by road | road haulage, a haulage company | Rising fuel prices squeeze profit margins across the road haulage sector. |
| connectivity | the extent to which places are linked by transport | transport connectivity, improve connectivity | A new bridge dramatically improved connectivity between the island and the mainland. |
| off-peak | relating to the less busy periods of travel demand | off-peak travel, off-peak fares | Cheaper off-peak fares encourage passengers to avoid the busiest trains. |
| electrification | the process of converting a transport system to electric power | rail electrification, electrify the network | The electrification of the rail network cut both noise and emissions along the line. |
| overcrowding | the state of being too full of people | overcrowding on trains, chronic overcrowding | Chronic overcrowding on commuter trains has prompted calls for extra services. |
How to turn these words into marks
Learn each word inside its collocation, not on its own: memorising "subsidise" is close to useless, but "ease traffic congestion" or "invest in transport infrastructure" gives you a ready-made phrase you can drop in without a grammar risk.
Use one or two precise items per paragraph where they are natural, and keep the rest of your English plain — accuracy outscores a sentence stuffed with impressive nouns you cannot control.
To make these words active, meet them in context: our transport reading practice generates Cambridge-style passages on this theme so you see the collocations working in real sentences, and the daily Word Coach gives you a word a day with practice in using it, which is how vocabulary moves from "recognise it" to "produce it under exam pressure".