### symptom:

Congestion
* More congestion also leads to more air pollution, at least locally.
* adds to pollution.
* also has a real impact on trade.
* can cause significant increases in the costs of transmitting electricity
  - occur in a network when one link or node receives more traffic than it can handle
* charging gives people the incentive to use their cars sensibly.
* forces businesses to waste time and money moving people and goods.
* imposes a variety of costs on our state's economy and society.
* is caused by allergies
  - swelling of the mucous membranes in the respiratory passages
  - contraction of brain-mind, unabated thinking
  - measured in degrees of buffer utilisation
  - often the result of the body s inability to cough up fluids accumulated in the lungs
* is the blockage or reduction of a passage way
  - cancer of transportation
  - result of demand exceeding supply
  - when there is more aggregate data in the network than there is bandwidth
* leading cause of aggressive driving.
* leads to pneumonia.
* negative externality.
* occurs when highway capacity is scarce.
* refers to the buildup of fluid.
* results in aches, tenderness, pain, bloating, irritability and swelling.
* threatens the environment and people s ability to move around the state.
* wastes fuel and time, causing driver frustration and leading to vehicular accidents.
* way of rationing the use of infrastructure, although it is an inefficient mechanism.

### symptom | congestion:

Congestion pricing
* is an attempt to put market forces to work on the highway
  - idea who time has come
  - designed to spread passenger demand through the day
* puts a premium on driving during peak periods.
* refers to the policy of varying road prices with the amount of traffic.
* tax on using a road during peak hours.

Nasal congestion
* can be one of the key symptoms of allergy
  - interfere with the ears, hearing, and speech development
  - obstruct the upper airway
* common problem for children resulting in thick nasal secretions.
* disturbing symptom associated with both nasal infection and allergy.
* is caused by the swelling of large veins lining the nasal passages
  - medical conditions
  - one of the consequences of such disease

Network congestion
* can also negatively affect the speed or quality of playback.
* is detected by loss in packets.
* plays a significant role in the overall distribution of round trip times.
* refers to the high volume of traffic across the Internet.

### symptom | congestion:

Traffic congestion
* causes a loss in productivity, and economic disruption
  - losses in productivity and profits
* common side effect of film shoots.
* contributes to pavement damage and air pollution in border communities
  - stress, road rage and lost time
* costs the American people billions each year in lost productivity.
* increases air pollution
  - as urban population density increases
  - fuel consumption
* is an issue for people, as well as safety for moving through the neighborhood
  - that a lot of people are concerned about
  - only the symptom of a complex set of social relationships
  - problems
* is the number one concern on people's minds in survey after survey
  - one element of fuel consumption that is getting worse and worse
* makes walking the fastest way to go for shorter distances.
* occurs when travel demand exceeds capacity.
* problem for anyone who ventures out of their home.
* real problem for businesses and the general public.
* serious problem in many cities.