Discussion about fees and taxes for bicycles so that we cyclists “pay our fair share” often turn to mentions of the “Fourth Power Rule.” What is this mysterious Fourth Power Rule?
Back in the 1950s and 1960s, highway engineers researched damage done to road beds and road surfaces for the purposes of allocating who should pay how much into the various road maintenance funds. The American Association of State Highway Ofﬁcials (AASHO; they added Transportation to their organization name during the 1973 OPEC oil embargo) collated this research and published their findings as a “Special Report” for a highway engineering conference in 1962.
What these researchers found is that damage to the roadbed is proportional to the 4th power of the axle load of the vehicle, and they called this “the Generalized Fourth Power Law.” This means that if you double the weight on an axle, your vehicle does sixteen times the damage to the road. The result is those signs you see on the backs of truck trailers that say “This truck paid $4,182 in highway taxes last year.”
Let’s take an example. A Toyota Prius weighs about 3,000 lbs, which is 1,500 lbs per axle. A Lincoln Navigator weighs in with a curb weight of 6,000 lbs, or 3,000 lbs per axle.
(3000 / 1500)4 = 24 = 16
Hackney Council made changes to one of its three recently introduced low traffic neighbourhoods (LTNs) over the weekend in response to feedback from locals and its own monitoring.
The introduction of LTNs has seen heated debate across London, with some welcoming the positive results to air quality and road safety they bring to residential streets being used as rat runs, while others complain of congestion being displaced to other areas.
The Hoxton West LTN’s traffic filter on Nile Street will now move further west, past its junction with Provost Street, to help prevent non-local traffic from using both Nile and Provost as rat runs, with transport chief Cllr Jon Burke speaking out over the weekend to warn vandals who had destroyed bollards in the area: “Cameras coming soon. When we catch you, we’ll prosecute.”
As barriers and signs go up to stop rat runs and promote cycling and walking, communities are deeply divided over the benefit
Sun 20 Sep 2020
Jaquelin Gutierrez, 45, is walking beside her seven-year-old daughter, Lauren, who is riding her bike in the sunshine. They feel far safer than they used to on their 10-minute journey home without so many cars. “I used to be super scared because cars go really fast and might run over me,” says Lauren.
Every so often there’s a flurry of complaints about people cycling through pedestrianised areas. Sometimes there might be a media item in which a talking head holds the cycling community at blame for the behaviour of a few and in some cases, the local authority will ban cycling, yet wonder why people are still there.
Failure to hit legal nitrogen dioxide limits is putting families and vulnerable people at serious risk
News Reporter 17th September 2020
A segregated cycle lane spanning the length of Kensington High Street will be in place by late October.
Kensington and Chelsea council said the “experimental” route will be separated from other road traffic with “wands”.
And it will include “floating bus stops”, where the cycle lane cuts between the bus stop and rest of the pavement.
It will begin at the Olympia London, and run for one mile to the south-west corner of Kensington Gardens.
Work on phase one of the plan will start on September 28 and take about four weeks, the council said.
Phase two will involve changes being made to junctions along the routes, and will be undertaken by Transport for London (TfL) and be complete by the winter.
The council hopes it will encourage more people to visit shops and restaurants and commute to work without using public transport.
Relaxnews14/09/2020 à 00:01
Exclusive: congestion climbed above 2019 levels in August as people went back to using cars after lockdownFiona HarveyTue 15 Sep 2020 06.22 BST
Congestion climbed above 2019 levels in August, and has increased to nearly a fifth on average above last year, in roads outside the capital’s central congestion charging zone, even while it has dropped sharply in the centre of the city.