Blog
Fatigue, rotas, and the numbers between them.
Notes on the HSE Fatigue and Risk Index and shift work in rail, healthcare and logistics. Written by the person who builds RotaPulse. Honest about what the models can and cannot do.
What the HSE Fatigue and Risk Index can and cannot tell you
An honest account of the FRI's strengths and blind spots from someone who built a product on it: work as done, individual differences, sleep, and why there is no pass mark.
The two numbers in the Fatigue and Risk Index, and how rail gets them wrong
The FRI produces a fatigue index and a risk index. They measure different things, peak at different times of night, and neither is a pass mark. A guide for rail safety managers.
Junior doctor rotas fail a fatigue test the rail industry has used for years
A 2019 study ran 95 foundation doctor rotas through the HSE Fatigue and Risk Index. Nearly half of all shifts showed increased fatigue-related error risk. Compliant is not the same as safe.
Your tachographs are spotless. Your drivers are still falling asleep.
Drivers' hours rules count time; they do not model biology. Why legal HGV rotas still produce dangerous fatigue, and how the HSE Fatigue and Risk Index sees what the tacho cannot.