The reckless policies that helped fill our streets with large cars
Sprawling SUVs and pickup trucks are rapidly becoming the dominant vehicles on US (and increasingly European) roads, raising concerns about safety, pollution, road wear, and urban space. Commenters trace this trend to a mix of regulatory distortions (like fuel economy rules, tariffs, and tax policy), automaker profit incentives, cultural status signaling, and perceived safety advantages in a fleet of ever-larger vehicles. Many argue that meaningful change would require pricing in the externalities of weight and emissions, reforming parking and road design, and offering smaller, more efficient alternatives that are actually available and attractive to buyers.
EVs, Emissions, and Particulates
- Several comments argue EVs are not “zero emission” on the road because tire wear generates microplastics and particulates, which scale strongly with vehicle weight (citing the fourth-power law for axle load and road wear).
- Others counter that “zero emission” is conventionally about greenhouse gases, not local particulates, and claim tire-pollution concerns are overstated and mostly raised by EV skeptics.
Vehicle Weight, Road Damage, and Taxation
- Multiple participants advocate weight-based or axle-load-based taxes (often explicitly proportional to the fourth power of axle weight) to reflect road damage and discourage heavy vehicles.
- Critics say this would just cluster all cars at a weight threshold (e.g., 3,999 lbs), punish legitimate small-business trucks, and effectively ban many long-range EVs. They prefer directly regulating particulate emissions or fuel use instead of indirect proxies like weight.
Why Big Vehicles Dominate
- Cultural and marketing factors: SUVs/CUVs have replaced station wagons and hatchbacks, in part because those body styles lost status in US culture; luxury features migrated into large utility vehicles.
- Regulatory and market distortions: references to fuel-economy loopholes, tariffs (e.g., blocking cheap small Chinese EVs), and policy-driven segment definitions that make SUVs/pickups more profitable than small cars.
- Some note similar SUV growth in Europe and the UK, suggesting rising wealth, changing expectations (comfort, power, features), and “cargo-culting” of US trends.
Safety and the Arms Race
- Many describe a “tragedy of the commons” / prisoner’s dilemma: large vehicles are safer for their occupants in mixed fleets, encouraging everyone to size up and worsening outcomes overall, especially for smaller cars and pedestrians.
- Others challenge simplistic “bigger is safer” inversions, noting heavy-vehicle–heavy-vehicle crashes are still severe and that visibility and collision frequency also matter.
Comfort, Obesity, and Everyday Use
- Discussion about whether rising obesity contributes to larger cars; some say tall or large-bodied people and bulky child seats push them toward SUVs.
- Others argue interiors are getting more cramped despite bigger exteriors, and that many use cases could be met by smaller vehicles, wagons, minivans, or even bikes/trailers.
Policy Directions and Disagreements
- Proposed levers include: weight-based fuel/road taxes, stricter parking policy, better transit and dense housing, higher license tiers for heavy vehicles, and relaxing import barriers.
- There is tension between “let people drive what they want” and highlighting large cars’ externalities: road deaths, pollution, road wear, land use, and climate impacts.