Insights
Plain, sourced writing on what vehicle engineering evidence can prove, what it cannot, and what the procedure rules expect of the expert who gives it.
Latest
28 October 2026
The duty to the court, the nine things Practice Direction 35 says a report must contain, the statement of truth, and the Ikarian Reefer principles.
Read the articleVehicle data & automated vehicles
What an event data recorder stores, what UN Regulation No. 160 requires, how the data is retrieved, and why the first letter in a case should ask for it.
Expert evidence & procedure
The expert's duty in criminal proceedings, the disclosure obligation with no civil equivalent, and the reliability test in the Criminal Practice Directions.
Crumple & damage consistency
Why visible damage is a poor guide to impact severity, what delta-V measures, how bumper design hides energy, and how the courts handle these claims.
Crumple & damage consistency
How crush measurements became a way of estimating impact energy and delta-V, where the stiffness numbers come from, and the assumptions behind them.
Enquiries
Tell me the type of matter, the court timetable and what question the court needs answered. I reply personally, usually within one working day, and I will say plainly whether the engineering can help and what it would cost.
Prefer email? rogernewbyconsulting@gmail.com
Roger Newby
Vehicle Engineer & Expert Witness
