While Tier 4 diesel truck engines have made significant changes in emissions levels, the industry has not been without scheming and controversy. Some manufacturers engineered their engines to perform well in testing, but changed their product as they were installed into vehicles to improve the gas mileage.
Diesel engines are also incredibly resilient and can stay on the road a long time. So dirty diesel engines will still be on our roads for a long time. Many old vehicles that are traded in, since they can't be used in the US, are shipped overseas and then are used in other countries, polluting the air in those communities that have less rigorous air quality standards.
WHAT YOU NEED TO KNOW:
Diesel Particulate Matter (DPM) has been shown to increase risk of cancer in humans.
Diesel Particulate Matter is heavier than other chemicals in emissions and stays closer to roadways, instead of rising up into the atmosphere.
If the Legacy Parkway Truck Ban expires, residents who live along Legacy, especially those within 500 feet of the roadway, will be breathing an exponentially higher concentration DPM 24 hours a day, 7 days per week.
Legacy Parkway Adjacent Neighborhoods: 1500 ft Freeway Pollution Area Maps
The traditional definition of noise is “unwanted or disturbing sound”. Sound becomes unwanted when it either interferes with normal activities such as sleeping, conversation, or disrupts or diminishes one’s quality of life. The fact that you can’t see, taste or smell it may help explain why it has not received as much attention as other types of pollution, such as air pollution, or water pollution. The air around us is constantly filled with sounds, yet most of us would probably not say we are surrounded by noise. Though for some, the persistent and escalating sources of sound can often be considered an annoyance. This “annoyance” can have major consequences, primarily to one’s overall health. - EPA Clean Air Act Overview (article link in gallery below)
WHAT YOU NEED TO KNOW:
Decibel units are exponential. 80 dB is twice as loud as 70 dB. Heavy diesel trucks at 65 MPH = up to 88 dB
Noise pollution impacts humans and wildlife
Problems related to noise include stress related illnesses, high blood pressure, speech interference, hearing loss, sleep disruption, and lost productivity.