<a href="https://en.wikipedia.org/wiki/Aveling_and_Porter" class="extiw" title="en:Aveling and Porter">Aveling and Porter</a> type R10 <a href="https://en.wikipedia.org/wiki/Steamroller" class="extiw" title="en:Steamroller">steamroller</a> (1901), weight 10 tons, in action at the <a href="https://en.wikipedia.org/wiki/Rural_Life_Centre,_Tilford" class="extiw" title="en:Rural Life Centre, Tilford">Rural Life Centre, Tilford</a>. The person preceding the steamroller in this image is reminiscent of the <a href="https://en.wikipedia.org/wiki/Locomotive_Acts" class="extiw" title="en:Locomotive Acts">Locomotive Act</a> of 1861 (repealed 1896) which limited the speed of any mechanical road vehicle to 4 mph (6.4 km/h) and required that a man carrying a red flag should precede the vehicle.
<a href="//commons.wikimedia.org/wiki/User:Martinvl" title="User:Martinvl">Martinvl</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>