(11-07-15, 05:22 PM)Grayo link Wrote: Only a solid barrier makes it a Dual Carriageway and a 70 mph speed limit.
A grass verge or similar makes it a two lane road (not a dual carriageway) and a 60mph speed limit unless otherwise stated.
Err, nope.
Any central reservation (solid or grass) makes it a Dual Carriageway.
"A dual carriageway is a road which has a central reservation to separate the carriageways" - Highway Code.
The speed limit for a standard car or bike on a Dual Carriageway is 70mph unless there are signs indicating a lower limit.