Hi camarones

Is the surface really asphalt? They're usually grit. Isn't it also a loop so they can do more than one circuit?

Reply to first comment:
You're GPS route isn't visible within OSM. Could you please upload with appropriate permissions so all OSM contributors can corroborate. You covered a lot of distance for that chainset. What speed were you travelling? Did you stop & take accurate waypoints & photographs? If so, please provide details.
You've mapped no North A38 exit, which is clearly evident in my photo:
https://pbs.twimg.com/media/CyJQd41XAAAS03H.jpg

Reply to second comment:
Please bear in mind the PDF is rotated, so North isn't directly up as in OSM. As it's still in construction nothing will be totally accurate, but note the PDF plan shows the roundabout's North West side coinciding with the existing A38 (the grey lines), which is how I had mapped it. You've moved it away.
OSM is a do-oligy, where you do things yourself, including correcting ones own mistakes. Unless you've more compelling evidence, please rectify.

Why have you moved lime kiln roundabout? The kiln's remnants are in the centre. You've made part of the A38 oneway.
osm.org/#map=18/51.41833/-2.63627
PDF (Page 10): https://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwjzsPPjj8TQAhVJDMAKHeyCDeIQFggdMAA&url=http%3A%2F%2Fwww.dundryview.org.uk%2Fwp-content%2Fuploads%2F2013%2F07%2FSBL-newsletter.pdf&usg=AFQjCNFtVe7YI_7qSTPbAa1CYgR8pHHeDw&sig2=dckyz1Utckm_BFHSzRB4Uw

Hi Terry
Welcome to OSM
For your edit, could you clarify the origin of your data?

Hi
Does the track go above or below the cycle route? Either way it requires a bridge/tunnel tag.
Is the waterworks mapped incorrectly?

MapQuest's own router avoids that road even though they've render the tiles. Check when MapQuest last retrieved a datadump.

Other routers (www.openrouteservice.org/) travel along it.

It can't be your added tags as MapQuest uses others roads without them.

Hi

Which Journey Planner? Some use outdated data, but these roads have been in OSM for a while now.

Hi Emma
There's no real need to add access & motor_vehicle as it's a presumption for tertiary roads.

Hi Max

Can you tell me where you obtained your information?
way/444401408#map=17/51.38159/-2.38161
You've incorrectly amended a cycle path & put a razed railway through some houses that were built before the railway was demolished.
By looking at the map 'Linear Park' should have given you a clue as to the correct alignment.
I hope your other edits are more accurate.

Hi again
Launceston Castle is mapped as the whole area not just the bailey
way/233574700

Hi Ashley
There's no need to add this as it's already there as a polygon

Do mechanical edits involve splitting polygons to remove sections to create separate objects which are part of a different entity?

Do mechanical edits involve splitting polygons & rejoin them so they correctly abut their neighbour?

perform a *search

You need to perform a such of the Tagging archive for 'Canal Banks' before replying further.

It appears you are unaware of P2's 'task' facility. Why is that?

Do automated mechanical edits involve deletions mixed in with tag edits?

Do you look at the time a changeset is active before making unfounded accusations?

It's a "large area" because it's the "longest river in the United Kingdom". Why do I have to explain that to you? You should be intelligent enough to work it out for yourself.

Why haven't you read the wiki fully?