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junctions

Kidlington roundabout design failure

Oxford, Transport — July 2022

The plans for redesigning the roundabout south of Kidlington are inconsistent with both the county's headline car-trip reduction targets, its active travel goals, and its Vision Zero commitment.

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the Plain: simple cycling safety improvements

Oxford, Transport — March 2022

There are some relatively easy changes that would make cycling safer at the Plain — ones that can be implemented without engineering works.

Angle or stagger the give-way line on the Cowley Rd entry, so people on cycles don't have their view of approaching vehicles on the roundabout obscured by motor vehicles on their right. (Compare the give way lines on Iffley and Cowley Rd in the Google satellite image.) By far the largest concentration of reported collisions involve cars or cycles entering the Plain from Cowley Rd.

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cycling safety and the Plain

Oxford, Transport — March 2022
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Two terrible deaths within a month have brought cycling safety to the fore, but the problems are not new and the Plain in particular has been a worry for a long time. Safety was the rationale behind the rebuild of the Plain in 2016 (which made things slightly worse), I used it as an example of junction design that failed to address walking and cycling safety and accessibility, and I tweeted about it just two weeks before the fatality.

Unfortunately there are no easy solutions, at the Plain or elsewhere in Oxford. Indeed I would argue that there are no significant improvements that aren't either very expensive or a long way from being Pareto (making no one worse off): witness the unhappiness about the parking removal in the Quickways and the modal filtering in the low traffic neighbourhoods. more

the worst junction in Oxford?

Oxford, Transport — May 2021

Consider the junction where the B4495 (Church Cowley Rd) meets the A4158 (Henley Avenue/Rose Hill). Is this the worst junction in Oxford? more

Oxford road junctions: inhibiting walking and cycling

Oxford, Transport — November 2020

One way to see how little consideration walking and cycling are given in Oxford is to look at the main road junctions. So stealthily and incrementally, over decades, have time and space at these been reallocated to motor traffic, at the expense of other modes, that people have become habituated to it and are mostly oblivious to how bad they are. We need all of Oxford's junctions rebuilt to prioritise walking and cycling safety and accessibility over motor traffic throughput.

The three examples I use here are chosen because I know them, but a similar analysis would hold for most of the major junctions in Oxford. more

Oxford street design failures 1: Howard St to Boundary Brook Rd

Books + Ideas, Oxford, Transport — November 2018

In this post I examine a "micro" example from East Oxford that illustrates how street design fails people walking or cycling: where the lane from Boundary Brook Rd meets Howard St. more

Oxford cyclists, imagined, actual and potential

Oxford, Transport, Travel — February 2015

A dual network strategy for cycling would only make sense if we had a bimodal population of cyclists. To illustrate this, consider Frideswide Square, where the planners are clearly picturing something like this.

On the one hand, the bulk of cyclists are expected to be vehicular cyclists, confident enough to take primary position going around the roundabouts and happy to cycle in dense 20mph traffic flows. Alternatively cyclists are allowed to use the pavement, mixing it with pedestrians with no segregation — the planners seem to be envisioning a small number of families on Sunday outings with children, happy to meander around pedestrians at 5mph and not needing to actually get to or from Fridewide Square. more

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