Everyone on DfT’s TAL list has just been emailed about Chapter 6, so it is now official news we can publicise. DfT had to be a bit reticent until today, because of the ‘purdah’ period before an election.
The email describes it thus:
The new Chapter 6 (Traffic Control) contains advice recommended for those designing traffic signal junctions and crossings on roads with a speed limit of 40 mph and under, particularly in urban areas. It also provides advice on the design of wig wag signals, tram signals and lane control signals.