road congestion

road congestion

a situation where the volume of traffic using certain roads is high enough to slow traffic flows, causing delays to all travellers journeying on those roads. Road congestion has increased in many countries as a result of greater car ownership and use, and is particularly prevalent in cities and urban areas, especially in the ‘rush hours’ at the start and end of working days as commuters travel to and from work. The main costs of road congestion are the time delays experienced by road travellers, which, in the case of lorry and van drivers, salespeople, etc., is borne by their employers. In addition to lost time, slow-moving vehicles burn more fuel to complete their journeys and cause more exhaust POLLUTION.

Congestion is an example of MARKET FAILURE, with each extra vehicle using a congested road slowing traffic for all vehicles, so imposing a social cost of EXTERNALITY on other road users in the form of delays. To correct for this externality, governments have several options. First, they could build more roads or widen or improve existing roads, at public expense, to increase road supply. However, this may generate further traffic as faster journeys encourage more consumers to buy cars or to live farther from their places of work. Second, governments can build roads and bridges financed by tolls paid by motorists. Third, government can subsidize public transport as substitutes for cars, such as buses, trains and trams, to encourage their greater use by travellers. Fourth, governments can restrict car access by designating bus-only lanes and introducing parking charges. Finally, governments can use road-pricing systems to charge vehicles for travelling on designated roads at specified times in order to discourage car use. For example, in 2003 London introduced a congestion charge of £5 per day for vehicles entering the central London charging zone, which has initially reduced traffic by around 20%. Since 1998 Singapore has had a more sophisticated electronic road-pricing scheme, which charges different rates for travel in different areas of Singapore at different times.

References in periodicals archive ?
11 (BNA): Director-General of Traffic Colonel Abdulrahman bin Abdulwahab Al-Khalifa today honoured a citizen who volunteered to organise the flow of the traffic after a loaded truck overturned, which caused road congestion and endangered the safety of road users.
Summary: There has also been a significant improvement in the traffic situation and road congestion
Traffic in Metro Manila is bound to get worse before it gets better, as the government rolls out its infrastructure projects meant to ease road congestion in the third quarter of 2018.
Official sources talking to Radio Pakistan informed that the app would educate people about driving license, provide traffic updates integrated with Google Maps, road congestion status and information of nearest bank to deposit fine.
The motion which went before the Lib Dem conference stated: "Current levels of road congestion are at crisis point and local authorities need greater powers to deal with traffic offences and to create Ultra Low Emission Zones.
The county said BRT could enhance ridership on metro transit and ease road congestion in one of the state's busiest corridors.
I believe the Westminster government needs to undertake studies to understand the real impact lorries have on road congestion, safety and pollution, and to understand the potential rail freight has to reduce this impact.
A PS40million plan to ease road congestion has led to a bridge being halfshut for 18 months.
Muzaffarabad is also a popular tourist destination with frequent road congestion.
The project will give Karachi a high quality public transport system alleviating road congestion and substantially cut travel time with limited disturbance to the existing transport network.
It's not just efficient transport though, unnecessary delays add to rural road congestion causing frustration for farmers and other rural road users.
In addition is Mayor Mallon aware that government money is available to relieve road congestion blackspots of which there are many around the town?