When designing controlled crossing on roads with speeds over 40mph, the designer should refer to CD 143 (DMRB) and the design should fully comply with the required standards.
It would be advantageous at this early stage to inform your Client that appendix E/4.4 states that stand-alone signal controlled crossings for pedestrians and cyclists shall not be provided were the 85th percentile speed exceeds 50mph.
The title of the thread says it all! I don’t like crossings on high speed roads, but we have been commissioned to carry out a design for a client on a 50mph road with 85th %ile speeds at just over 50mph. I’m looking for any experience with what was done (if anything) with regards to vehicle restraint at such installations. I think some of the decisions can be made based on the density of pedestrians crossing but in my mind there should be a way of keeping vehicles out of the guardailed areas. This of course isn’t possible with a standard VRS. I can’t see a block of concrete on the final approach to the crossing point being acceptable either! Any thoughts/experience please?