Definitions

[streaky]

There have been a number of threads recently that assume knowledge of certain definitions and there has been some uninformed debate stemming from that. The Highway Code uses many terms without defining them. The Highways Agency website does not provide definitions and the 1980 Act is not available online.

So, does anyone know the legal definition of:

- a dual carriageway;

- a lay-by?

I'm sure other readers will have their own requirements for precise definitions of other terms.

No assumptions please, just authoritative definitions straight from the 'book' (and not the OED either please).

Streaky

[Flat in Fifth]

Streaky re lay by see response in reversng into an unlit vehicle thread as a starter on lay by.


edited to add I think the layby info you are looking for is here

http://tinyurl.co.uk/lokv

This takes you to the Highways Agency Design Manual for Roads and Bridges.

You need to look in Volume 6 Sect 3 Part 3 TA69/96
The Location and Layout of Laybys.

Not been able to find the similar thing for duals though.

Hope that helps.

FiF

>> Edited by Flat in Fifth on Friday 5th September 11:32

[streaky]

FiF - that (www.pistonheads.com/gassing/topic.asp?h=0&f=10&t=55695) doesn't define a lay-by, it amends the (ungiven) definition in a particular circumstance - S

[206xsi]

And there's a dual carriageway thread a few days ago... Tony Rec may have started it?

Frankly I can't find anything in the electronic HWC!
www.highwaycode.gov.uk/index.shtml

Maybe that's cos I should be busy diagnosing customer's problems on the phone?!

[Flat in Fifth]

streaky said:

FiF - that (www.pistonheads.com/gassing/topic.asp?h=0&f=10&t=55695) doesn't define a lay-by, it amends the (ungiven) definition in a particular circumstance - S

added extra info above while you were posting.

[streaky]

Flat in Fifth said:

streaky said: FiF - that (www.pistonheads.com/gassing/topic.asp?h=0&f=10&t=55695) doesn't define a lay-by, it amends the (ungiven) definition in a particular circumstance - S added extra info above while you were posting.

FiF - gr8. Xd in cyberspace - S


>> Edited by streaky on Friday 5th September 12:10

[Flat in Fifth]

Hey Streaky,

Re duals:

Check out link as above to DMRB

See Vol 6 Sect 1 Part 1 TD9/93
Road Geometry Links

Chapter 8 with ref to table 4 (actually on pages 3 and 4 of chapter 6 just to confuse) taken with all the other design criteria. Maybe this is as good as we are going to get.

It is all too much and too complicated to post here.

What d'ya fink?

I'm now off for pie, chips and mushy peas in t'canteen.

FiF

[streaky]

Flat in Fifth said:

Hey Streaky, Re duals: Check out link as above to DMRB See Vol 6 Sect 1 Part 1 TD9/93 Road Geometry Links Chapter 8 with ref to table 4 (actually on pages 3 and 4 of chapter 6 just to confuse) taken with all the other design criteria. Maybe this is as good as we are going to get. It is all too much and too complicated to post here. What d'ya fink? I'm now off for pie, chips and mushy peas in t'canteen. FiF

FiF - I saw that, as you say too complicated to post here (so, dear reader, you'll have to look it up yourself ). I was hoping for something that would clear up the "is a road with painted hatching with unbroken lines both sides (ie. a continuous ghost island) a dual carriageway?" question. If the 'limit signs' for a dual carriageway are there i think it's foregone, but if they're not ...

>> Edited by streaky on Friday 5th September 14:08

[Flat in Fifth]

streaky said:

Flat in Fifth said: Hey Streaky, Re duals: Check out link as above to DMRB See Vol 6 Sect 1 Part 1 TD9/93 Road Geometry Links Chapter 8 with ref to table 4 (actually on pages 3 and 4 of chapter 6 just to confuse) taken with all the other design criteria. Maybe this is as good as we are going to get. It is all too much and too complicated to post here. What d'ya fink? I'm now off for pie, chips and mushy peas in t'canteen. FiF FiF - I saw that, as you say too complicated to post here (so, dear reader, you'll have to look it up yourself ). I was hoping for something that would clear up the "is a road with painted hatching with unbroken lines both sides (ie. a continuous ghost island) a dual carriageway?" question. If the 'limit signs' for a dual carriageway are there i think it's foregone, but if they're not ... >> Edited by streaky on Friday 5th September 14:08

My interpretation is that it is not a dual.
eg table 4 states for 5 "Dual 2 lane carriageways All purpose D2AP" which is the most minor dual an edge treatment of kerbs and raised verges or 1m hard strips.
Guess edge treatment could include the central reserve?

Did you notice access treatment in table 4 included "Clearway"?

Must say I have never seen the signs for dual carriageway used anywhere other than in connection with a proper central reserve, ie kerbs and grass as a minimum.