
Thursday, 20 August 2009
Invisible Bikers?

A ticket? On a sunday?
This shocked us -if Bristol Parking Services are going to work on Sundays, next they will be out after 5pm on a weekday. But a closer check of the photo revealed there was nothing to fear. This picture is from Bath!
Wednesday, 19 August 2009
Stokes Croft: Hi Viz is power
When asked "how did they get their cars onto the pavement without driving the wrong way down a one way road", they said "We have dispensation". Clearly doing a traffic survey not only allows you to park on pavements -seen that before- but drive a car down a one way street, all for the sake of the experiment. This must be a very powerful dispensation.
What could be so powerful as to give the cars HD02OVG and X636FWP the ability to drive and park where they like? For that is a power that everyone in Bristol would love to have.
Only one thing has that power: Hi-Viz tops. Admit it -if they weren't in the shiny yellow, they wouldn't be people in positions of authority, they wouldn't have respect from the population. This is why everyone should embrace the yellow tops -they are the first step to achieving power and influence in this city.
Banksy Parking Logistics
"Oh please!"
"It's something that is really popular that does no-one any harm. Let celebrate this rather than complaining about a perceived traffic inconvenience."
Finally, can we close by reminding the locals not to mention the fact that Boston Tea Party at the top of Park Street does the best coffee, cakes and meals of all the cafes in this area, because if word does get out its lovely garden at the back will fill up. Point the turists at Cafe Nero and Starbucks, it is all they expect and deserve.
Tuesday, 18 August 2009
Avoiding the Heisenberg Problem on stokes croft

One of the big problems in any scientific measuring experiments are the effect of the observers on the behaviour of the system. In particle physics, the Heisenberg Problem surfaces -measuring something's mass slows it down; measuring something's velocity stops you weighing it. With humans, it is often the Hawthorn Effect: the act of being monitored changes people's behaviour. Either way: the observers get in the way. For this survey, the risk is that the survey cars will impinge on the flow of traffic, so altering the number, placement and velocity of the vehicles.

The survey team have anticipated this, and yet still managed to park their survey cars as close as they can to their deck chairs, by driving both their vehicles V127LEU and GK57YZS the wrong way down the Nine Tree Hill one-way section. They have not approached Stokes Croft at all, not even before the experiment began.

This leaves road unmodified; the bike lanes in Stokes Croft in their "raw" state, unobstructed by any more vehicles than normal.
Tax-dodging cyclists reading this blog may wish to save and print out a copy of the survey team and vehicles contraflowing the road and nipping up on the pavement. That way, when they are stopped by the police for illegally mimicing the same operation, they can declare that they are part of the Bristol Traffic survey team, and merely following the same scientific rigour when approaching the Stoke's Croft junction: to observe without interfering.
The war on cars continues!

Hopefully it is just temporary, a left over from some harbour event or something, or put in while BT need access to their manhole. If it does not, then we will have to write a stern letter to the Evening Post, complaining about this anti-car madness.
Monday, 17 August 2009
The Marlborough Street bus interchange
A taxi wants to pull up to the taxi-only dropoff zone but can't; a car waiting for arriving passengers is there. Other vehicles are going up to the "short stay" pavement and not blocking through traffic.
The taxi has no option but stop in the road to unload, causing some tension in the vehicles behind. But all of them are just trying to do the same thing: park here to pick up or drop off passengers.
There is an option for parking round the corner, by the new magistrates court, but for some reason (security?) a perfectly wide pavement is bollarded off.
There's still some space opposite; only one vehicle is using this. It is worth remembering about though, if every you need to pick people up from the bus station in a car.
Sunday, 16 August 2009
Build-outs are for Builders
Build-outs tend to be for the exclusive use of residents, delivery vehicles and people working in the houses. This means that they provide a small amount of resident parking spaces without any of the overhead of creating resident parking areas. No need to sticker up cars, paint over roads, enforce pavement or road parking rules. Just leave the build-outs for vans such as Refresh Painting and Decorating and their van KM53RVY. Problem solved!
(This is on the junction of Hanbury and Pembroke Road, outside the (proposed) Cliftonwood CPZ. With build-outs like these, there is no need to expand the proposed zones.)
Saturday, 15 August 2009
Contra Flows 2


Thursday, 13 August 2009
For Immediate Release
A press release from the cycling campaign reaches our inbox.
The Bristol Cycling Campaign wishes to extend its deepest sympathies to the family and friends of the cyclist who died following a collision with a lorry on Winterstoke Road on Tuesday August 11.
This tragedy is part of a series of bicycle/lorry collisions in the city over the past week.
- Thursday August 6th, A collision at the junction of Perry Road and St Michael's Hill, left the cyclist in a serious condition in the Bristol Royal Infirmary.
- Tuesday August 11th The junction of Winterstoke Road and Brunel Way. The cyclist, struck by a Mercedes Sprinter van, died.
- Tuesday August 11th Old Market. A DAF lorry cab turning left collided with a bicycle outside the Evening Post. Again, serious injury -this time pelvic, leg and head injuries, and again, another customer for the Bristol Royal Infirmary.
- Wednesday August 12th Stokes Croft/Ashley Road - a female cyclist left with a suspected broken leg.
This week of tragedy comes exactly three months after two teenage children were killed walking in the city by hit and run drivers in separate incidents.
The Bristol Cycling Campaign calls for Bristol Council to come up with a design for the city's roads that ensures that pedestrians and cyclists can get to their home, work or school without having to travel in fear for their lives.
It is impossible for Bristol Council's targets of doubling cycling to be achieved without increasing the numbers of collisions, unless there is a step change in the way that all of us in the city treat the most vulnerable road users.
Here of some examples of ways that we could improve road safety in the city:
- Bristol must follow Portsmouth's lead of slowing down the speed limits on the approaches to the city, to stop drivers coming straight off 70mph roads and into the narrow streets of the city - and to stop them speeding up as they get closer to the motorway.
- Roads, and especially junctions, need to be designed to reduce the risk of collisions. As a specific example, the Stokes Croft/Ashley Road collision involved a bike lane which is on the left side of a left-turn only lane. The collision here is not "an accident", it is the inevitable consequence of the design of the road.
- As lorries appear to be disproportionately involved in the recent incidents, Bristol Council needs a plan to make their movements less hazardous to other road users. In London, for example, Transport for London is running a special cycle/lorry share-the-road training and publicity campaign.
- Everyone needs to be encouraged to attend the Council-supported cycle training courses. As well as teaching cyclists how to cope with dangerous road designs, they will give drivers better understanding of the dangers that cyclists face.
Martin McDonnell, secretary of the Bristol Cycling Campaign said: "With rising obesity levels, congestion and road pollution, encouraging cycling is more important than ever. We call on the Council to fulfil the Cycling City vision by making the city safe to cycle around."
We wish a speedy and full recovery to all the Bristolians who are currently in hospital because they chose to cycle around a cycling city. We also wish to express our appreciation to the emergency services, who have responded excellently in all these incidents.
Wednesday, 12 August 2009
Bike under Lorry on Stokes Croft
The reporter "S" says:
I was heading out on stokes croft, had turned right and was in picton street when the incident happened, so didnt see it. I did see that the vehicle in the front of the left turn lane was the orange truck involved. I think there may have been a bike in the ASL, but my memory is vague as I do that route too often. If I am correct, that bike was somebody else anyway.
The lorry was turning left from cheltenham road and the arches, but as it wasn't moving I could catch the green light first and turn into ashley road, then left into picton street, where I was busy feeling smug that I had cleared the junction so easily today. Suddenly there is really load screaming, that doesn't stop. Everyone nearby starts rushing up, saying whats happened?, looking around.

There's a woman on the floor screaming, not much blood. A PCSO runs up and starts to look after her, and calls for support. The nearby shop brings out a blanket and everyone comfort the cyclist until the paramedics and then the ambulance turn up. I'm not giving you any photos of her -the lorry driver is the man in orange to the left of the photo.

The ambulances came fast(ed: 6-minutes from the first photo to the one with two ambulances)

The ambulance took her off, there was some suspicion of a broken leg/ankle. The bike is toast. By comparison, the cyclist seemed fairly uninjuredThere we have it then, three bike/lorry collisions in a week -one on Park Row, one outside the Evening Post, this one. We all hope that everyone involved recovers rapidly.

It's too early to assign blame here; the reality is that in any bike/lorry collision, its the person on the bike who loses. What is obvious, when you look back at the route they were using is that the bike lane leads people on bikes into exactly the wrong place -inside vehicles on the left turn lane. We've been here before, praising vehicles for blocking it out of safety concerns, and here you have evidence that it really is something to avoid. This is a pretty hazardous junction all round, its where the same reporter had their A&M Motor Road Rage incident, heading the other way.
RIP Bristol Urban Design Team
Tuesday, 11 August 2009
Game Theory at Sussex Place junction

- Lights are green for traffic coming off Ashley Road
- Lower Ashley Road was stationery and traffic from Ashley Road (white transit followed by green and black cars - hereafter Muppet Group A) moved forward onto the junction to avoid getting held all the way through another sequence.
- Lights change to green for traffic coming off Sussex Place
- Traffic moving from Sussex Place onto Lower Ashley Road (led by the yellow brakedown lorry) was unable to move forward much due to congestion on Lower Ashley Road and Muppet Group A.
- Traffic moving from Sussex Place onto Ashley Road got fed up with sitting there and started to pull out from the queue and drive down the wrong side of Sussex Place to get past the blockage. Quite a lot of this traffic was overtaking 10+ cars queueing to turn left onto Lower Ashley Road (i.e. driving a long way down the wrong side of the road).
- Lights change to green for traffic coming off Lower Ashley Road.
- Several of the cars coming down the wrong side of Sussex Place were still trying to cross the junction, including the grey sports car and the silver Nissan Micra in the picture but with more infront and behind (hereafter Muppet Group B).
- Traffic turning left from Lower Ashley Road into Ashley Road (led by lorry with white cab and blue body) is blocked by Muppet Group B.
- Traffic turning right from Lower Ashley Road into Sussex Place (led by silver people carrier) is blocked by Muppet Group A but would be blocked by Muppet Group B even if Muppet Group A had moved in the two or three minutes since they pulled into the middle of the junction.
- No-one can go anywhere until Muppet Groups A and B have managed to clear the junction.
This is fascinating, as it is another classic example of real-world deadlock. In computing systems, a deadlock occurs when a number of entities are each blocked, waiting for the actions of the other entities. It can only occur if
- There is mutual exclusion: here, only one vehicle can fit into the middle of the junction at a time, or into any of the junction exits.
- A hold and wait condition exists: it is possible to claim one resource (the junction or an exit) before acquiring the other.
- Resources cannot be taken by force. There is no easy way to remove a vehicle from the junction or an exit.
- A circular wait exists: the chain of dependencies comes back to the original entity.
- The self-interested action of each driver is to pull out into the junction, to make some progress when you get a green light, because when the light changes, the car at the front of the other junction will do exactly that, regardless of whether it can get out. As a result, the system grinds to a halt; it enters a failed state.
So, why is that important? Because Game Theory was the underlying political science/mathematics of the cold war. And John Nash, the mathematician behind it. These are the equations you would use when planning a conflict escalation policy that starts off with tanks in Berlin or Vietnam, and ends with an exchange of strategic armaments in ballistic missiles over the Arctic Circle, and hence the end of humanity -the big Failed State.
The politicians, the soldiers, sat their with their maps, their tables, their graphs, got the mathematicians in and game up with plans that during the cold war came pretty close to that condition on a couple of occasions, but everyone always backed off. For which we all have to be very, very grateful.
Comparing the Cold War to Sussex Place then, we have to pretty glad that those people trying to drive across Bristol weren't involved in planning or managing the conflict, as we wouldn't have stood a chance of getting through it alive.
Monday, 10 August 2009
Contra Flows


Sunday, 9 August 2009
Balloon Fiesta Parking on Bower Ashton Terrace
(trivia: we've seen this build-out before; clearly a secret Ashton Gate parking area. This time, credit to reporter "WB" for letting us know about this secret spot for a car)
Saturday, 8 August 2009
Remembering Troy Atkinson
Troy William Atkinson
4th April 1994-28th April 2009
Ofsted Again



Friday, 7 August 2009
Railway Path: 24 years old
From John's perspective, he is probably thinking that it was lucky that he had the foresight to build a 15 mile walking/cycling path, just in case such an event should occur. But look at it from the train company's perspective: this man stole a line from them, the least they can do is make him use it.
Thursday, 6 August 2009
Traffic news
The E.P comments section is the usual mess of assumptions and abuse, but there is also commentary from someone who was there, which we reprint in its entirety
I saw the aftermath but not the actual accident. I was waiting to cross the road at the traffic lights just up from the St Michaels Hill junction, the traffic lights were changing and the lorry was one of the last vehicles to go past me and was turning left up towards St Michaels Hill. The next thing I heard was a massive crushing sound - like a massive coke can - which of course turned out to be the bicycle - and heard screams, I looked round to see a horrible scene, one that you never ever want to see.
I believe that the cyclist saw the traffic lights start to change and went to cross the junction at the bottom of the hill and didn't see the lorry coming around the corner. The lorry obviously didn't see the cyclist either...so blame probably lies both ways.
Wishing the man a speedy recovery, I'm just glad it wasn't more serious.
I expect the truck driver is scarred as even if he was partly to blame - to get out of his cab and find somebody under your wheels screaming in pain is not how he would have wanted to start his day.
Terry, Bristol
Pedestrians holding up traffic
Wednesday, 5 August 2009
Lockleaze: the motorbike moves
Tuesday, 4 August 2009
Criminals
Monday, 3 August 2009
Death by Motorway
"DO NOT CROSS M32
3 pedestrians killed
here in the last
12 months
please use
formal
crossing point"
Sunday, 2 August 2009
Product placement: AA
Once you recognise that, that zebra-markings are just a quaint memory of a distant past when children walked to school, it's then clear that their sole remaining use really is short-stay parking. They have no other purpose in our fair city.