> I think your calculation of car sizes is a bit wide. I think most cars in the US are around 6 feet wide. You're not including mirrors in the width of the veh

> I think your calculation of car sizes is a bit wide. I think most cars in the US are around 6 feet wide. You're not including mirrors in the width of the vehicle. Typical exterior mirrors on passenger vehicles extend out about 6 inches from the body, so that adds a foot to the vehicle's width. My VW Golf Sportwagen is about 7 feet wide mirror to mirror. My Honda Odyssey is about 7.5 feet wide mirror to mirror. I've measured both vehicles by dropping a string from the edge of the mirror housing down to the ground, and marking it on both sides and measuring the distance between the marks. Take a look at the interactive graphic towards the bottom of the page by Cycling Savvy[1] Commercial vehicles like tractor trailers and buses are 8.5 feet wide at the body. Their mirrors extend out further, meaning that they're close to 10.5 feet wide mirror to mirror. [1] https://cyclingsavvy.org/lane-width-space/ https://cyclingsavvy.org/lane-width-space/