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It’s a false equivalence bordering on callousness to equate knife crime deaths with deaths from pollution.Whereas a the catastrophic life from a stabbing is unambiguously from a single cause, poor air quality serves to shorten life expectancy and, with the exception of rare cases, is one of a complex mix of factors which can include poor diet, stress, alcohol, drugs. Air pollution kills people in the same way that sugary carbonated drinks and cheap white bread kill people. The one factor that everyone who analyses these things will tell you that the strongest link of any given factor to early mortality is being on a low income so the primary test of any public policy when it comes to not ‘killing people’ should be does it or does it not make people poor. By targeting older vehicles the ULEZ seems almost designed to act as a regressive tax and it hits hardest the ‘just about managing’ section of society and has tipped some over the edge.This would perhaps be easier to justify if there was some sort of meaningful public health benefit to the measure. The ULEZ is most effective in reducing the amount of nitrogen dioxide in the air most of the vehicles that need to be replaced are Euro 5 or older standard diesel. The reduction isn’t massive in wider scheme of things but a difference is being made. Just how harmful nitrogen dioxide can be is not something on which there is an academic consensus. As it generally occurs alongside particulates when emissions are made, separating the specific impact of this gas is difficult. One thing research does show however, is that if you have a gas cooker, particularly with a gas stove, you will be exposed to up to 100 times the levels of Nitrogen Dioxide in your own home as you would be outside by a busy London street. See the following link for a summary of research on the subject.https://www.vox.com/energy-and-environment/2020/5/7/21247602/gas-stove-cooking-indoor-air-pollution-health-risksThis raises the question about why people who are making very alarmist statements about the toxicity of our air due to vehicle emissions and quoting high number for the number of people dying as a result are not focused on where this problem is most acute i.e. in our kitchens. If tens of thousands are dying due to fumes from cars outside then, give relative levels of concentrations of the same harmful gases in a large proportion of homes, then wouldn’t hundreds of thousands of people be dying from this cause?The actual impacts of the ULEZ on life expectancy are probably too small to be identified and measured but I do believe there is a strong possibility that it will not serve to reduce it because any public health benefit from cleaner air will be outweighed by the number of people dying younger due to stress related to the financial impact of the scheme particularly during this ongoing cost of living crisis.What needs to be recognised is that the primary purpose of initiating and extending the ULEZ is financial and not for public health reasons. Due to vicious financial squeeze put on TfL by the government, new sources of revenue need to be developed. Reports suggest that the projections made by TfL for the revenue generated by the first stage of the ULEZ were well below what was expected as people switched to new vehicles more quickly and changed their driving habits so that they didn’t enter the zone but did business outside it. The capital investment in the scheme has been huge and therefore a very strong incentive has arisen to increase the returns it brings by extending its reach. Despite all of the above, I do believe Sadiq Khan is right to extend the ULEZ. He has little choice as the ongoing financial crisis for TfL continues and the question is not will public transport in London get worse both it terms of cost and quality of service, but by how much. The money from a bigger ULEZ will not solve this problem but it will serve to slow the decline of public transport in London and therefore will slow the inevitable resulting increase in private vehicle use.

Jeremy Parkinson ● 1583d

Sorry Ed but this is a completely false analogy. Smoking is a personal choice and it benefits both society and the individual if it is reduced. The vast majority of vehicle movements across London are not made by choice but are unavoidable. A good proportion are commercial (deliveries, business related, taxis) and generally only the wealthy will use a private car with no consideration for the cost of the journey.Therefore there is little elasticity of demand so taxing transport more will raise the cost of living with relatively limited impact on demand. More consideration needs to be given to the fact that a large proportion of the population has a very limited disposable income and increased taxes will have a disproportionate impact on their lives.The ULEZ's primary benefit is a reduction in nitrogen dioxide but this is very marginal in the context of overall London Air Quality. If you really believe that this is material and contributes to £2.5bn in health costs wouldn't your efforts be better employed campaigning for the banning of gas ovens which expose owners to much high concentrations of nitrogen dioxide than they would get standing by the most polluted road?You might believe that a policy of taxing people until they either change their habits or decline further into poverty is justified but I don't think there will be much support for this approach. Better air quality should be achieved by investment in public transport but that isn't likely to happen to the degree needed at present. The ULEZ achieves little in terms of improved air quality and disproportionately affects people who are struggling financially but it is a necessity of desperate times because otherwise there would be a huge hole in the funding for London's transport. We shouldn't pretend otherwise.

Jeremy Parkinson ● 1580d

"More consideration needs to be given to the fact that a large proportion of the population has a very limited disposable income and increased taxes will have a disproportionate impact on their lives."Exactly the same argument is deployed against taxes on cigarettes, alcohol, sugar etc. They hit the poorest hardest while the wealthy can smoke or eat themselves to death....except they don't.  Consumption taxes are regressive and always hit those with smaller disposable incomes harder, but they also have the biggest impact and achieve better outcomes, particularly for those with the lowest disposable incomes. "The vast majority of vehicle movements across London are not made by choice but are unavoidable."  Exactly the same argument was made the nicotine was addictive and therefore people didn't have a choice.Vehicles don't have to be polluting - but since the cost of pollution is carried by everyone and not the polluter, it is cheaper to pollute than invest in an EV, bike or Chiswick Tractor.  When that logic changes, so will the makeup of the vehicle fleet - both personal and commercial.  60% of car trips are made for shopping, leisure and personal business purposes, just 20% for work purposes, while a third of car trips are shorter than 2km.It is almost certainly bollocks that the vast majority of current personal and work journeys currently done by car can only be done by car.Many could be replaced with public transport, walking or cycling - either immediately or following improvements in infrastructure.  It might not feel like that to those who are addicted to their cars, but for many (not all) driving a petrol car to the shops a mile away "is a personal choice and it benefits both society and the individual if it is reduced".

Ed Saper ● 1579d

You offer no evidence only your own opinion that it 'is almost certainly bollocks that the vast majority of current personal and work journeys currently done by car can only be done by car' but let's just assume for a second that you are right.Assuming you significantly add to the tax burden of people who continue to use their cars you are likely to have a limited effect on the school-run mum SUV drivers who exercise you so much for whom the extra expense will be a fraction of what they have spent on their car. For your policy to be effective it will need to encourage modal shift from drivers with greater sensitivity to cost who will tend to be those on lower incomes.We have already seen a significant rise in cost for drivers over the last few months which will have increased costs for people who need to drive on a regular basis by more than you could dream of adding to their tax burdens. This will have encouraged some to shift to different means of transport but for most it will have resulted in a squeeze in income at the worst time.You are two relatively fortunate men whose jobs and circumstances allow you to operate with relatively little car usage. You need to develop a bit more empathy with the vast majority of working people in this country for whom this is not possible particularly those who earn far less than you and for whom the current rise in costs is catastrophic. Wanting to load more expense on them at this point with policies that are bound to be largely ineffective in their stated aims is just callous.

Jeremy Parkinson ● 1579d

Tom, looking at income in this way gives a distorted picture. Car ownership is very low in the bottom decile for income. However, the relationship between income and car ownership breaks down as you move up the scale. Also what is more important that car ownership is use of a vehicle to make a living. Very few bankers, ad execs, university professors, IT consultants, company executives need to use a vehicle for their work. This does not apply to lower paid jobs such as those in the building trade, delivery drivers, taxi drivers, health workers etc. In addition house prices are quite closely linked to transport accessibility so people often can't afford to live close to their place of work. If you still have children of school age, ask their teachers about this and they will explain to you why so many of their colleagues drive to work, speak to a police officer and they will tell you than none of their team live in central London, speak to hospital staff and you will hear a similar story. Commuting into London by car isn't generally something that people do as a lifestyle choice.It is these lower and middle income earners that are hardest hit by the ULEZ because they will tend to have older cars which they will have had to replace at a cost which may seem not particularly material to you but can be catastrophic for some people.I believe is it correct to say the majority of vehicle movements in London are unavoidable (assuming current state of public transport provision). I looked closely at this some time ago using the DfT numbers for Chiswick High Road for total vehicle movements, adjusted on a conservative basis for private hire and then using TfL definitions of what could potentially be cycled or walked the result was 18% for cycling and 7% for walking.These potential numbers do not take account of journeys that need to be driven because the person or a passenger is disabled or elderly, because something difficult to carry is being transported, because there is severely bad weather, because it is necessary for employment and a whole host of other reasons why a relatively short journey may be unavoidable.

Jeremy Parkinson ● 1579d

First of all, the reduction in traffic numbers on the High Road is similar to that for cars, a drop of 23% between 2002 and 2018, from 19k to 15k. Improved public transport may well have contributed partly to that fall, but as far as that has occurred it indicates that those vehicle trips can indeed be substituted, and are therefore not unavoidable. The increase in cycle counts I gave is taken from TfL's manually collected annual series, not the camera counts. However, the 2021 manual data agrees well with the camera counts for hours monitored on 10/11 June last year: the manual count was 2889 while the sum of the S62 cycle lane and S62 eastbound roadway at a similar location comes to 2753, less than a 5% difference. I've excluded the westbound roadway bike counts because, as you mention, there is an issue with this camera picking up a portion of the bikes in the cycle-lane. Hence including them leads to an  overestimate of the proportion of bikes in the roadway. Using just the cycle lane and eastbound roadway numbers, 83% of the cycle counts came from the cycle lane.The vehicle counts using both the east and westbound roadway cameras come to just over 8k, a drop to 42% of the 2002 levels, while car counts have fallen even lower to 35% of 2002 levels. Because of the more than doubling of bike counts, bike numbers reached over 50% those of cars in June last year and peaked at 54% in September. The increase in cycling on the High Road is exceptional on a London-wide basis. Between 2019 and 2021, Chiswick High Road has seen the largest increase in bike counts of any of the 450 Outer London locations monitored by TfL. Also in the top ten was Boston Manor Road. It's unlikely to be coincidental that both of these roads provide segregated cycle lanes. As I said, the observed shifts in travel mode along the High Road already demonstrate that a much higher proportion of vehicle trips than your estimate of 17% are avoidable. Once there is a clear run from the High Road to Hammersmith Road, we might even see bike counts overtake car counts along stretches of C9.

Tom Pike ● 1578d