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Yes, the theory is that bikes are counted in with motorbikes but that doesn't tell you much.
Interesting what you say on the speed limits. I was expecting places like West Green Rd and St Ann's Road to come on top of the speeding but that wasn't the case
https://docs.google.com/spreadsheets/d/1b9-8XUQbF_asdnNtRGLXV5waeIRfmZeJE0p2IBfjANM/edit?usp=sharingI think there may be errors in this though. I think the measurements may be before Haringey became mainly a 20 zone but the speed limits from after.
Edit: I was surprised that you suggested that Green Lanes is about average for a London road of that size. Congestion seems much worse there than similar roads.
aggi-
Ah, I didn't say anything on the speed limits, just implied that there is quite a lot of speeding on Wightman Road (you have that as Weightman Road, by the way), and I bet it's not just @middleofnowhere climbing hills. :)
A lot of intangible factors influence speeding, and the figures in that spreadsheet are somewhat misleading (although I think that at least the Ladder and Gardens have been 20mph for a while, you may be right that there are also some discrepancies based on time of introduction of speed limits, but that's hard to find out, and in practice it takes a while for them to sink in), as its impact does not depend on whether people observe the speed limit or not. (I also think that ATCs aren't completely reliable on how to measure speed, but I don't actually know how that's done.)
In a residential street like Wightman Road, with many side street junctions, driver behaviour that would hardly be noticed on a wide dual carriageway with few junctions can be very alarming. St Ann's Road is too narrow, and too frequently obstructed, for speeding to be an effective strategy, and West Green Road has long high street-like bits that are usually very busy with people walking, so you wouldn't expect very high speeds. Also, different bits (e.g., east and west of Black Boy Lane) have very different characteristics owing to the alignments the drivers are on.
Oliver Schick
Good work, but as usual it doesn't count cycling. I've heard various things over the years as to what exactly ATCs make of pedal cycles, none reliable. The technology can only evolve, so hopefully at some point we'll get a better reflection of how many people cycle. As ever, origin-destination surveys can be more valuable.
The rule of thumb for most major London single carriageway, single- to two-lane in each direction, arterial streets is around 20,000 vehicles per day (both directions combined). You can see this executed to perfection in Green Lanes. Streets like Wightman Road have about half to three quarters of that, depending on alignment. I suspect that it's slightly lower than the rule of thumb in the case of Wightman Road because of its inferior alignment, e.g. a poor connection north via Hornsey Park Road and the appalling Mayes Road. Unfortunately, the lower volumes mean that drivers drive considerably faster on those less busy alignments.
An interesting set of numbers nonetheless, and mapping it is useful.