A prolonged episode of fine particle concentration prompted the prefecture to activate differentiated traffic for the first time in Rennes on Sunday.
Some motorists criticize this measure, believing that it stigmatizes individuals without affecting industrial and agricultural activities.
Efforts will be necessary in the metropolis to respect the commitment to halve greenhouse gas emissions by 2030.
A barely perceptible light breeze that rose on Monday.
And a small discreet rain fell in the night from Monday to Tuesday.
In Rennes, it is these two factors combined which have allowed a very slight improvement in air quality at the start of the week, after five days of exceeding the alert threshold.
We will have to wait until Thursday and a clear deterioration in the weather to hope for a complete dispersion of the fine particles which clog our lungs.
Because the man may try to mobilize, he can not do much in the face of climatic conditions.
Well yes, he could, but it would require significant effort and sacrifice.
You just have to see some reactions to the announcement of the implementation of differentiated traffic on Sunday in the Rennes ring road.
"Another reason to make money", tackled Ben in reaction to one of our articles.
“Weird to always make the car pay for this”, Jean-François was annoyed.
“We will have to work on better anticipation”
Saturday, beyond the anger and incomprehension, it was above all the surprise that dominated when the prefecture of Ille-et-Vilaine announced the entry into force of the Crit'Air sticker.
A first in Rennes since its implementation in 2018. “The protocol which was presented at the time was strictly applied”, soberly analyzes Gaël Lefeuvre.
But why limit yourself to Sunday alone, even though the air quality continues to deteriorate in Ille-et-Vilaine?
“I will not comment, it is a decision of the prefecture”.
“People were surprised.
There are definitely improvements to be made.
It's normal, it was a first, recognizes the secretary general of the prefecture.
We will no doubt have to work on better anticipation”.
Brittany: *faces a peak of pollution caused particularly by spreading*
The State: “yes then we are going to reduce the speed of 20 km/h on 2x2 lanes, & put the Crit'air sticker in Rennes.
Here is.
Spread them?
Oh no it can go on.
🥰 »
— Cocktail mazal-tov 💥🤸♀️ (@VN_ZotAni) March 26, 2022
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The Crit'Air sticker is not a miracle solution anyway.
But its difficult implementation alone illustrates the immense work that remains to be done to halve our greenhouse gas emissions by 2030. A given to understand it.
On Tuesday, the concentration of PM 2.5 particles in Rennes was
3.8 times higher than World Health Organization guidelines.
“We have all the more efforts to make as we have to deal with significant population growth.
The biggest is yet to come,” Rennes Métropole elected official Olivier Dehaese recently acknowledged during the presentation of the climate plan.
The necessary support of the population
Among the solutions envisaged by the community to reduce its emissions, we first find the development of public transport, and in particular the five trambus lines which will link Rennes to the municipalities of the first or even second ring.
Problem: they are not expected before 2028 at best.
In the meantime, the metropolis has already undertaken its conversion to buses running on electricity and gas.
This summer, it will test a limited traffic zone (ZTL) where car traffic will be greatly reduced.
Before the establishment, probably by 2030, of a low emission zone (ZFE) which will chase diesel vehicles from the hypercentre.
“All these measures are tools for informing and raising public awareness.
This allows each vehicle owner to be aware of its impact,” says Ludovic Guillaume.
The person who chairs the committee for monitoring the plan for the protection of the atmosphere (PPA, last acronym, we promise) recalls that it is necessary to have "the support of the population" in order to be able to move forward, but warns that certain decisions "will be difficult".
The ammonia in question
In the small voices that are raised, we also hear an expectation of fair treatment between citizens who are asked a lot and polluting economic activities that continue.
The question of ammonia emissions generated by the spreading of agricultural fertilizers and phytosanitary products raises questions.
In a few weeks, the concentrations were multiplied by four according to the statements of the rural station of Airbreizh.
The Breton agricultural profession is trying to "raise awareness" in the face of this new challenge.
But she warns: "It's like cars or boilers, if we want to encourage farmers to change, we have to help them," an environmental advisor to the Chamber of Agriculture told us recently.
reindeer
Brittany: Soon the end of the air pollution episode (thanks to the rain)
Planet
Air pollution: The Respire association denounces a problem that "is not sufficiently taken into account"
Alternating traffic
Brittany
Fine particles
Microparticles
Agriculture
Air pollution
Diesel
Pollution
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