&gt;<i>A passenger car takes roughly 315 feet to come to a complete stop. A fully loaded truck takes 525 feet.</i><p>How does this change if truck design and &quot;per-axel&quot; fee incentives were rationalized[1][2] to instead maximize the number of axles? Doubling the number of axles reduces road damage by 94%. Currently semi trucks account for 6% of vehicle miles driven[3] and 99% of all traffic damage to roads.<p>But would this measure also improve braking distance and safety?<p>[1] <a href="http:&#x2F;&#x2F;www.nytimes.com&#x2F;1989&#x2F;07&#x2F;26&#x2F;business&#x2F;economic-scene-better-highways-at-no-cost.html" rel="nofollow">http:&#x2F;&#x2F;www.nytimes.com&#x2F;1989&#x2F;07&#x2F;26&#x2F;business&#x2F;economic-scene-be...</a> (erroneously states that damage scales as the cube of axle weight; it scales as the fourth power or even the sixth(!) power on weak roads)<p>[2] <a href="https:&#x2F;&#x2F;truecostblog.com&#x2F;2009&#x2F;06&#x2F;02&#x2F;the-hidden-trucking-industry-subsidy&#x2F;" rel="nofollow">https:&#x2F;&#x2F;truecostblog.com&#x2F;2009&#x2F;06&#x2F;02&#x2F;the-hidden-trucking-indu...</a><p>[3] <a href="http:&#x2F;&#x2F;www.princeton.edu&#x2F;~alaink&#x2F;Orf467F13&#x2F;FreightFacts&amp;Figures2012.pdf#33" rel="nofollow">http:&#x2F;&#x2F;www.princeton.edu&#x2F;~alaink&#x2F;Orf467F13&#x2F;FreightFacts&amp;Figu...</a>