Wiktor Wise
Electric vehicles (EVs) are heavier than their gas-powered counterparts, sometimes by thousands of pounds. This has sparked concerns about their impact on roads, bridges, and car parks. While EVs offer environmental and safety benefits, their weight raises questions about their compatibility with existing infrastructure. Some worry that heavier EVs may cause increased road wear and tear, shorten the lifespan of roads and bridges, and even breach safety barriers during collisions. However, others argue that the impact of EVs on infrastructure is minor compared to larger vehicles like trucks and buses. As the popularity of EVs grows, addressing these concerns and ensuring the resilience of roads and safety barriers becomes crucial.
| Characteristics | Values |
|---|---|
| Heavier than gas-powered cars | Up to 50% heavier, sometimes thousands of pounds heavier |
| Impact on roads | Additional road wear, such as potholes, and reduced lifespan |
| Impact on bridges | Increased risk of barrier breaches on high-speed roads |
| Safety concerns | Increased risk of severe injury and death for all road users |
| Federal weight limits | Allow vehicles weighing up to 80,000 pounds, including cargo |
| Automaker response | Working to improve safety and reduce battery weight |
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What You'll Learn
Heavier EVs may cause more road wear
Electric vehicles (EVs) are heavier than their gas-powered counterparts, sometimes by thousands of pounds. This has raised concerns about their impact on roads, bridges, and car parks. While EVs offer many advantages, including safety and environmental benefits, their weight has sparked worries about road wear, safety barriers, and infrastructure durability.
The extra weight of EVs comes mainly from their batteries. For every 150 km of range, battery weight increases by about 100 kg. This additional weight results in more friction between tyres and roads, leading to quicker road deterioration. Academics at the University of Edinburgh calculated that battery vehicles could cause up to 40% more road wear than internal combustion engines, mainly due to heavier vehicles like buses and trucks.
The impact of EVs on road lifespan is significant. Maria Lehman, the incoming 2023 president of the American Society of Civil Engineers, explains that roads are designed for a 20-year lifespan, and while they often last longer, adding heavier vehicles reduces their longevity. This is especially true for bridges, which typically have a 30-50 year lifespan. The weight of EVs can impact the lifespan of roads and bridges, though the overall effect is predicted to be minor, reducing their shelf life by one or two years.
The weight of EVs has also raised concerns about safety barriers. The University of Nebraska found that EVs, with their higher weight and lower centre of gravity, can breach US "guardrail" barriers. The increased kinetic energy of heavier EVs travelling at the same speed as traditional cars can lead to a higher risk of breaching safety barriers, potentially causing vehicles to topple over or penetrate through to oncoming traffic. These safety concerns have prompted calls for urgent research and policy updates to ensure national infrastructure can withstand the impact of heavier EVs.
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EVs may be too heavy for bridges
Electric vehicles (EVs) are heavier than their gas-powered counterparts, sometimes by thousands of pounds. This has sparked concerns about their impact on roads and bridges. While the extra weight of EVs is not expected to cause significant damage to roads, there are worries that it could affect the lifespan of bridges.
The weight of EVs can impact the lifespan of bridges. Bridges are designed with a specific lifespan in mind, typically lasting 30 to 50 years. While they usually surpass this, the additional weight of EVs could potentially shorten their lifespan. This is because heavier vehicles can increase friction between tyres and the road, causing more stress on the bridge's structure.
The impact of EVs on bridges is a growing concern, especially for older bridges that may already be in need of repair. In the UK, there are calls for urgent research and funding to ensure that the country's infrastructure can withstand the weight of heavier vehicles, including EVs. The VRMA, a UK-based association, has identified bridges as "high-risk areas" and has requested that they be checked as a priority.
The weight of EVs can also affect safety. Heavier vehicles travelling at the same speed as traditional cars will exert more force on safety barriers in the event of a collision, increasing the risk of breaching those barriers. This concern was highlighted in a University of Nebraska study, which found that EVs can weigh up to 50% more than conventional cars and are capable of breaching US "guardrail" barriers.
While the shift to EVs is crucial for reducing emissions and combating climate change, it also introduces challenges for infrastructure. Automakers are working to improve safety and reduce the weight of their vehicles, but it remains to be seen how the increased weight of EVs will impact bridges in the long term.
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EVs may be too heavy for multi-storey car parks
Electric vehicles (EVs) are heavier than their gas-powered counterparts, sometimes by thousands of pounds. This has sparked concerns about whether they are too heavy for roads, bridges, and car parks. While roads are designed to handle heavy vehicles, such as 18-wheel tractor-trailers, the impact of EVs on infrastructure cannot be ignored.
The extra weight of EVs has raised concerns about their compatibility with multi-storey car parks. In the UK, Conservative MP Greg Knight requested that the government test the "adequacy of the strength of multi-storey car parks and bridges at safely bearing the additional weight of electric vehicles". This concern is not unfounded, as EVs can weigh significantly more than traditional cars. For example, the curb weight of the Hyundai Kona electric crossover is 19% heavier than its gas-powered equivalent. The Ford F-150 Lightning electric truck weighs 37% more than its gas-powered version, and the GMC Hummer EV truck weighs an astonishing 9,063 pounds.
The weight of EVs can impact the lifespan of roads and bridges. Maria Lehman, the incoming 2023 president of the American Society of Civil Engineers, explains that roads and bridges are designed for specific lifespans, typically 20 years for roads and 30 to 50 years for bridges. While they usually last longer, adding heavier vehicles like EVs can reduce their lifespan by a year or two. This is because heavier vehicles cause more friction between tyres and roads, leading to quicker deterioration and the formation of potholes.
The impact of EVs on multi-storey car parks specifically relates to their weight-bearing capacity. While bridges and roads are designed to handle heavy vehicles, car parks may have different structural considerations. The weight distribution of EVs, with their heavy batteries, could affect the load-bearing capacity of car park floors and structures. However, it is important to note that car parks designed for heavy vehicles, such as those accommodating semi-trucks, should be able to support the weight of EVs without issue.
While the weight of EVs is a valid concern, it is essential to consider the broader context. The rise of larger, heavier vehicles, such as SUVs, is not unique to EVs, and the average weight of vehicles on US roads has increased over the years. Additionally, automakers are working to improve safety and reduce the weight of their vehicles. In conclusion, while EVs may pose challenges for some multi-storey car parks, it is not a widespread issue, and the benefits of EVs in terms of safety and environmental impact should also be considered.
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EVs may be too heavy for crash barriers
Electric vehicles (EVs) are typically heavier than their gas-powered counterparts, weighing 20% to 50% more. This is due to the weight of their batteries, which are necessary to achieve a travel range of about 300 miles (480 kilometers) per charge. For example, the Audi e-tron weighs 5,800 pounds, nearly double a regular Honda Civic, and the Rivian R1T weighs 6,000 pounds. This extra weight has raised concerns about the safety of EVs on the road, specifically their compatibility with roadside safety measures such as crash barriers.
In the US, the University of Nebraska-Lincoln's Midwest Roadside Safety Facility (MwRSF) conducted a test of steel crash barriers by pulling a Rivian R1T electric pickup at the deflection devices. The results were devastating, as the EV hit the steel barriers at 60 mph, losing little speed after the initial impact before crashing into a row of concrete barriers. This test raised concerns that EVs may be too heavy to be stopped safely by guardrails on roads.
The extra weight of EVs comes at the expense of people in other, lighter vehicles, as well as pedestrians and bicyclists. The increased weight and horsepower of EVs can lead to more speeding and fatal crashes. The rapid acceleration of EVs, such as the Hummer, which can go from 0 to 60 in around three seconds, is a particular cause for concern. As the percentage of EVs on the road increases, the proportion of run-off-road crashes involving EVs is also expected to increase.
While EVs offer superior protection to their occupants in a crash, their weight and power can pose a risk to other road users. The US National Transportation Safety Board has expressed concern about the safety risks heavy EVs pose when colliding with lighter vehicles. Transportation officials have sounded the alarm over the weight disparity between EVs and lighter internal combustion engine (ICE) vehicles. It is critical to conduct further testing and analysis to understand the potential risks and ensure that roadside barrier systems are adapted to accommodate the changing composition of the vehicle fleet.
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EVs are heavier than gas-powered cars
Electric vehicles (EVs) are generally heavier than gasoline-powered cars. This is due to the weight of their batteries, which can add hundreds of pounds to a vehicle. For example, a 2024 Hyundai Kona Electric weighs about 23% more than its gasoline-powered counterpart, while a gas-powered Ford F-150 weighs about 1,824-2,274 kilograms, and the heaviest F-150 Lightning EV weighs about 3,130 kilograms. In some cases, EVs can be thousands of pounds heavier than similar gas-powered vehicles.
The weight difference between EVs and gas-powered cars has raised concerns about road safety and infrastructure durability. Some worry that the added weight of EVs could increase the risk of severe injury and death for all road users. There are also concerns about whether roads, bridges, and parking structures can handle the additional weight of EVs. For example, the recent collapse of a parking garage in New York City raised questions about the ability of aging infrastructure to support heavier vehicles.
However, experts argue that the extra weight of EVs does not damage roads nearly as much as semi-trucks or transport trucks. While EVs are heavier than gas-powered cars, they are not the heaviest vehicles on the road. Large commercial trucks, with multiple axles and wheels, cause significantly more road damage than passenger vehicles, whether electric or gas-powered.
The weight of EVs has also sparked discussions about the fairness of road maintenance funding. Since EVs do not pay gasoline taxes, which are a significant source of revenue for road maintenance, some states and provinces have imposed additional fees on EV owners to contribute to road upkeep. For example, Alberta, Canada, will charge EV owners an annual tax of $200 to cover the extra wear and tear attributed to heavier vehicles.
While the weight of EVs has raised valid concerns, it is important to consider the safety and environmental benefits of these vehicles. Automakers are working to improve safety features and make batteries more energy-efficient, addressing weight concerns while still delivering the advantages of electric vehicles.
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Frequently asked questions
Electric vehicles (EVs) are heavier than gas-powered cars, sometimes by thousands of pounds. However, the impact of their weight on roads and infrastructure is not expected to be catastrophic. Roads are designed to handle the weight of 18-wheel tractor-trailers, which weigh about 35,000 pounds empty and no more than 80,000 pounds when loaded. Federal weight limits allow vehicles weighing up to 80,000 pounds on the road and up to 20,000 pounds of weight on a single axle.
The extra weight of electric vehicles can impact the lifespan of roads and bridges, but the overall effects are expected to be minor, reducing their shelf life by one or two years. The weight of electric vehicles can also increase the risk of severe injury and death for all road users in the event of a collision.
Electric vehicles can weigh up to 50% more than conventional cars. For example, the curb weight of the 2024 Hyundai Kona crossover is about 3,005 pounds, while its electric equivalent weighs 3,571 pounds, or 19% more. The Ford F-150 Lightning electric truck weighs 6,000 pounds, while the gas-powered version weighs 2.5 tonnes.
The weight of electric vehicles can increase the force exerted on safety barriers in the event of a collision, leading to a higher risk of barrier breaches. The Insurance Institute of Highway Safety (IIHS) has expressed concerns about whether their crash tests are suitable for the heavier electric vehicles.
Electric vehicles offer significant safety and environmental benefits. The weight of the batteries in electric vehicles can provide additional safety in crashes for the occupants. Electric vehicles also contribute to reducing emissions and combating climate change.
