Cars have weight issues. The example of the Mini, designed to save fuel during rationing, highlights this trend. The size of cars is increasing, especially with the surge in popularity of SUVs.
Electric cars may look similar to traditional cars for now, but the key difference is the heavy battery they carry.
In our series debunking electric vehicle myths, we address common misconceptions about EVs, including range anxiety, carbon emissions, mining, and air pollution. In this final episode, we investigate whether electric cars will be too heavy for our roads and infrastructure.
Claim
As roads have evolved over time, concerns have arisen about whether electric cars will strain infrastructure like roads, bridges, and parking lots due to the weight of their batteries.
Matthew Lin, a columnist for the Daily Telegraph, recently questioned the readiness of charging infrastructure and the capacity of roads and bridges to handle heavier vehicles.
Conservative MP Greg Knight urged the UK government to test the structural integrity of multi-storey car parks and bridges against the added weight of electric vehicles.
The Asphalt Industry Alliance warned that small roads could suffer more potholes, while the Daily Mail suggested that multi-storey car parks might be at risk of collapse due to the weight of electric vehicles.
Science
Electric cars can be quite heavy. For example, General Motors’ Hummer weighs over four tons, with a significant portion of that weight attributed to its battery pack. On the other hand, the Tesla Model Y, a more affordable electric car, weighs 2 tons, still lighter than some traditional vehicles like the Range Rover or Ford F-150.
According to a transport and environment advocacy group, EVs are on average 300-400kg heavier than traditional vehicles. The weight of the battery increases by approximately 100kg for every 150km of range.
The increased weight of electric cars leads to more road wear and faster deterioration of roads. However, a study found that the wear is primarily caused by heavy vehicles like buses and trucks, rather than cars and motorcycles.
Regarding bridges, most in the UK can support vehicles weighing up to 7.5 tonnes, with a safety margin built into the design. There are no concerns about national highways, which are built to accommodate heavy goods vehicles.
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Are there any precautions?
There are limitations to the weight of electric vehicles, especially in older car parks. While newer facilities can accommodate heavier vehicles, older structures may require reinforcement to handle the increased weight.
Options for multi-storey car park owners include strengthening the building or reducing the number of cars on each floor, which can impact profits.
Regular inspections are essential for car park owners to ensure the structural integrity of their buildings amid the transition to heavier electric vehicles.
It’s worth noting that advancements in battery technology may address the weight concerns of electric vehicles in the future. Continued progress in battery energy density could lead to lighter EVs in the long run.
Encouraging smaller cars through policy measures like taxes and fees can have additional benefits beyond reducing road wear, such as resource conservation, carbon emission reductions, and improved parking lot management.
While EVs are heavier than traditional vehicles, it’s unlikely that their weight will significantly impact road infrastructure. Concerns about weight should not overshadow the importance of transitioning to zero-emission vehicles.
Source: www.theguardian.com
