Comparing temperatures: past and present
How accurate are our historical temperature records?
STEPHEN CONNOLLY
MAY 31, 2024
In 2021 Bugatti released their Chiron Super Sport 300+. The “300+” is because it is the first road-legal car that has reached speeds above 300mph, although production models are electronically limited to 271mph.
This car can accelerate to its top speed of 490km/h in around 40 seconds and can come to a complete stop from that speed in less than 15 seconds.
The Dublin Port tunnel was opened on 20th December 2006. Technically there are two 4.5km long tunnels, one for each direction of traffic.
© Copyright P L Chadwick and licensed for reuse under CC-BY-SA-2.0.
The walls of the tunnel are hard, unlike surface level motorways which have flexible safety barriers. Crashing into the walls at high speeds would be not only fatal for those involved in the crash but could also potentially damage the tunnel’s structural integrity.
To encourage people to respect the 80km/h speed limit, average speed cameras have been installed. An average speed camera system consists of at least two cameras (but ideally more) distributed over the region where the speed limit is being enforced.
The cheap option would be two cameras on each tunnel, one at the start and one at the end. If the timestamp of your car passing the second camera is less than 202.5 seconds after you passed the first camera then you have travelled the 4.5km at an average speed faster than 80km/h and a speeding ticket and penalty points for your license will follow.
The better option is to have more than two cameras distributed along the tunnel to prevent any reckless and idiotic Chiron Super Sport 300+ driver from attempting the following…
https://stephenc.substack.com/p/comparing-temperatures-past-and-present
