Mike, I have some, mainly in relation to litter picking.

Depending on the work and/or the type of road, this could be covered under 'chapter 8' or the new 'red book' (among other things)

Mike, I have worked with street works contractors.

Peter has given you the important link and subjects. The subject of road signage/barriers and pedestrian segregation etc is dealt with under the NRSWA Chapter 8 (but the interview won't expect you to know all about that, just awareness).

You could familiarise yourself with some of the tools they use and have knowledge of PUWER; 360deg excavators, soil compactors, jackhammers, Stihl saws, floorsaws, tarmac vibrating plates, HIAB trucks.

Show a knowledge of HAVS and how to do medical assessments and document trigger times EAV/ELV.

Know about the risks of silica dust and noise. Saws should have a water/dust suppression device.

Know about the risks of striking utility cables and pipes, risk of electrocution and flash fire. There's a tool known as Cat+Jenny for detecting mains electric, needs an annual calibration

Know about the PPE for all the above.

The big issues these days are training street operatives, silica dust, HAVS, avoiding utility strikes, protecting the public.

Good luck!

Mike, I have never worked on motorways, but there's standard ways of setting up a site on a motorway. The problem I always had was trying to do the Chapter 8 thing on narrow estate roads and country lanes, and what to do when we couldn't comply with Chapter 8.

Good luck !

And - if it's a 'live motorway' job - it may be necessary to understand that you would be committing an offence when you stop your vehicle or walk or work on the motorway except in an emergency, unless authorised or under direction of a policeman... Being authorised means carrying a 'motorway pass'. In Scotland they're issued by Transport Scotland but I guess it'll be the Highways Authority in England and Wales? The passes are personal and must be carried at all times or an offence is committed - you cannot work under authority of someone else....

Or - at least - this was the position around five years ago when I was involved in early stage planning for some works on the M90... And the bridge pillars are now in place - already looking like a legacy project all involved will be proud of.