Archive for the 'Cars & Driving' Category

Speed Kills: Use your head

Monday, October 20th, 2014

West Midlands Police’s WMPTraffic cused a bit of a stir last week on twatter and in the blog world, with this piece on helmets, speeding, and cake. Quite a good piece , in many ways, and a bit lacking in others. First of all, I have no argument with the cake bit.

Moving on to the others:

The helmet discussion. Should cyclists wear helmets, and should they be required to wear helmets?

I’ll come right out and say it: If you want to wear one, do so. I don’t. I suppose, should it become law, that I will, because I follow the rules of the road when cycling.

The article predictably, comes from the viewpoint that you should, and it may save your life, but then relies on anecdote to back it up. I won’t go into detail on this, as others have done it better in the comments, but it has been shown driver behaviour near a helmeted cyclist can be worse, and helmet legislation discourages cycling- there’s real data to show this.

I’d suggest anyone who wants to wear a helmet should, having assessed the risks and benefits themselves.

When we got to the speed bit, I commented, and got a good answer. What does concern me is the simplistic approach; it’s almost as iif we’ve given up on hazard perception and avoidance, and just moved to reducing the impact. Speed kills. Take that to it’s logical conclusion we end up back in 1865.

At this point, I need to stop, as I’m repeating myself, but I’d just like to reinforce the idea that we should seek to avoid collisions, not merely reduce the speed they happen at. We should target people on the phone, messing with their satnav, or just plain not paying attention. Target the tailgaters, the lane-hoggers, and the 40mph everywhere brigade.

Take the High Road

Wednesday, June 4th, 2014

You take the low road, and I’ll take the high road, and I’ll use more fuel..

We’ve been away to Scotland; more precisely Mallaig, the end of the Road to the Isles.

A common theme of our trips up north seems to be killer road allegations- though I suspect the 30mph advisories on some of the bends may be the attempted fix for this (for the record, with the exception of a couple of sharp bends under narrow bridges, there’s not a bend on the road that you couldn’t get round safely at well above that unless you have 4 bald crossplies and knackered dampers).

Anyway, our journey was uneventful.

Friday afternoon’s trip took us to Moffat and an overnight stop. Next morning, a fuel stop, and off up the A82 (another “killer road” that can provide some real entertainment if you like the twisties. It’s noticeable that a lot of improvement work is happening now: The section at Pulpit Rock that had traffic lights for years will soon be wider- a deck is being built out into the loch- and Crianlarich’s bypass looks imminent. A turn to the west just after Fort William, a trip past Glenfinnan and Our Lady of the Braes and Inverailort House (give me a pile of cash and that’ll be my highland home) and we’re soon in Mallaig: the A830 was quiet, and I didn’t have 4 bald crossplies ;-).
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Twenty’s Plenty?

Saturday, April 5th, 2014

Note: this is an old post- originally drafted nearly a year ago, but recently I’ve been reminded of it by the surprising results of a poll, showing that 80% of people want a default 20 mph limit, and the also interesting observation here.

On to my old post:

I was all ready to go into a full, frothing-at-the mouth rant about something that seems to be gaining ground: Twenty’s Plenty, a campaign for the default speed limit to be 20mph, not 30.

Instead, I’ll try to give a reasoned argument. I’ll set my stall out here: I’m a driver, I speed at times. I’m also a cyclist and pedestrian, like I’d imagine a lot of people are.

I think many speed limits are too low. Some are too high- tiny residential estate roads with a 30 limit, for example, but many main roads are crippled with a low limit: many urban roads around towns were built with a 40 limit, which has been lowered.

I also think that 20 limits have a lot of merit, but feel strongly that that is far too low for a default. 20 limits are fine in areas where no sane individual would be doing much more anyway: housing estates, shopping areas, near schools, for example, but the 30 mph limit is entirely appropriate for a great many roads. I’m sitting writing this looking out at a road that has a 30mph limit that is generally exceeded a little- a residential road that happens to be a B road, and carry a reasonable amount of traffic- and the only thing that seems dangerous is the occasional nutter at 60+.

My big concern is that if 20 is the new 30, we’ll see it on almost everything. I’m also concerned about some of the things presented on their website.

What’s wrong with 30 mph?
Well the 30 mph limit was actually brought in as the national speed limit for built-up areas in 1934. Prior to that the 1903 Motor Car Act designated a specific category for the Motor Car. It also raised the speed limit to 20 mph. The Road Traffic Act of 1930 abolished the 20 mph limit for cars of less than 7 people. This led to such an increase in road deaths that just 4 years later the 1934 Road Traffic Act introduced the 30 mph speed limit in built-up areas. Whilst in 1934 this may have been an acceptable limit, the huge increase in the number of motor vehicles on the roads has created a huge imbalance in vulnerability between pedestrians or cyclists and motor car users.

This is happily forgetting that while, yes we have much, much greater traffic density, at the time of the 30mph limit being increased, a typical car was the Austin 7, a car with cable brakes, initially only operating on the rear wheels. If you drive even a 1960s or 1970s car today, you’ll find the handling, grip levels, and stopping distances are vastly inferior to today, as is the pedestriam safety should you hit someone.

As to vulnerability of pedestrians and cyclists, they’re always much more vulnerable- and vehicle drivers will always need to remember this: the aim should be not to do that at all, I would suggest.

What are the benefits of 20 mph?

Whilst the safety benefits may justify 20’s Plenty on their own, there are additional real benefits for lower speeds. Traffic noise drops considerably, as does pollution. Your street becomes a far more pleasant place to be and this encourages people to walk or cycle instead of using the car.

Pedestrians, as a rule, will (or should) be on a footpath, except in a pedestrianised area, which should, of course, be devoid of vehicles, and personally, when I cycle, I find that cars at 20mph (in a traffic-calmed street, for example) are very awkward: their speed is far to close to mine, so far too much time is spent closer to a moving car than I’d like- in a 30 limit they’ll be past and gone. As to the noise and pollution, I’d like to see some hard facts there: 20mph may necessitate use of a lower gear, *increasing* noise and emissions- most medern cars will just pull 30 mph in 4th gear, but 20 will definitely need 3rd.

I’d also suggest that those people that are going to walk or cycle will already do so: people that want to drive will continue to do so.

It’s a complex, difficult situation.

I’d personally have more support for 20mph as a limit if it’s applied sensibly, and limits are reviewed wholesale, and meaningful data is recorded and acted upon, not just an unconsidered reaction.

I’m also of the opinion that many people would like a 20 limit in their own roads, but not anywhere else, and I think this observation is quite revealing:

tweet-20

This is anecdotal evidence that most drivers want to travel above the 30mph limit, and definitely above 20, which again, is somewhat at odds with the survey’s results.

I’m really thinking here that we’re seeing a “it’s OK for me to drive at above 20/30, but anyone else doing it is a dangerous lunatic” and “it’s Ok to drive above 20/30, except in my road, where it’s dangerous”. I’ve also noted that more than one prominent supporter of 20mph limits seem to be non-drivers (and indeed, non cyclists), which I’d say probably makes it hard to make an objective judgement about what constitutes the best balance of speed, emissions, and safety, though given the alarming lack of awareness of the laws of physics governing a ton and a half of car, it’s clear that there’s plenty of drivers that can’t, too.

People, huh?

Looking at figures, oddly, there’s a suggestion that there’s been an increase in casualties in 20mph limits, and slight reductions elswhere, but the problem here is that we don’t know if this is simply because there’s more 20 mph roads to get injured in. There’s a fairly clear indication that there’s less severity of injury, as you’d expect. It’s my opinion (but this is only opinion) that traffic-calmed areas or very low speeds cause pedestriams to take more risk, but that the lower traffic speeds mean that the chance of an collision resulting is much lower, and that if it does, then injuries will be less severe.

The second link above draws the distinction between 20mph limits and 20mph zones: Zones have traffic calming such as humps, chicanes, and road markings as both physical and psychological devices, limits alone don’t have these- it’s clear the zones are much more effective, and these are usually in narrow, dense streets where it’s quite clear that 30mph would be unacceptably risky.

The problem here is that the data isn’t clear and uniform, there’s conficting and incomplete data, which seems to be no way to make a decision. The debate rages on…

Sun (roof)

Monday, February 17th, 2014

Today was an unusually bright, clear, pleasant day for lately, so I thought I’d finish the sunroof fixing.

A bargain from ebay got me a complete sunroof assembly: glass, motor, rails and trim. While the manual suggests removing the glass to change the assembly, I elected not to, as the adjustment’s a bit tedious, with fiddly trim pieces and awkward screws. This means a bit more weight to lift in and out. First though, out with the aforementioned expensive grease, so expensive it can only be made from the semen of virgin unicorns. This goes on the plastic slides, and I suspect it’s nothing flasher than a non-sticky silicone grease, designed to avoid picking up muck.

Removal is shockingly easy: disconnect the motor cables, and undo the bolts, leaving one in at the front to take the weight. This stage nearly went wrong- someone had been here before, and one bolt had a half-stripped torx head. I put it back in a more accessible place, in case it ever needs grinding out, but also leaving it a little looser than the others. It would have been nice to get a new one:

Someone had butchered this bolt: I was lucky to get it out, but a good quality bit helped.

Someone had butchered this bolt: I was lucky to get it out, but a good quality bit helped.

but it would be a special order part.

Once the bolts were out, with an assistant helping, the whole assembly comes forward, down, and is free to come out through the tailgate. The new unit goes back in the same way.

With the drain tubes and electrical connections reconnected, 2 tests: first, does it leak, and second, does it work. A pass on both items means it’s time to refit the headlining.

First step is to clean your hands: it’s an irritatingly light grey colour. Rescue any of the clips that came adrift and replace them onto the (scrubbed clean) headlining:

Clips that retain the headlining to the sunroof frame.

Clips that retain the headlining to the sunroof frame.

Then revove the rear headrests, and pass the headlining back in via the tailgate. You have to bend it into place into the recess a little. make sure the interior lamp cable and sunroof switch cable drop through the hole, then Refit the grab handles- note they are handed, and the back ones are different- and the sun visors. If, like me, you broke or scratched the little sunvisor hooks getting the impossibly tight covers off, part numbers 380 857 563, and 380 857 561A are what you need :-/ .

Apply some contact adhesive to the headlining and the plastic supports where the original glue was (bonus point if you can name the CD in-shot on the parcel shelf):

Where to apply glue. There's a corresponding support fixed to the roof.

Where to apply glue. There’s a corresponding support fixed to the roof.


Let it dry for a few minutes, push the lining against the supports, and refit the C-pillar trims.

Finally, refit the sunroof switch and interior lamp, squeeze the clips shown in the second photo on to the sunroof frame, and bask in the joy of a clean refitted headlining and working, non-leaking sunroof, pausing only to order the damned hooks.

Result- a fixed sunroof for less than £100, even with the unicorn-bollocks-depleting grease.

Raindrops Keep Falling on Your Head

Saturday, February 8th, 2014

Well specifically, it wasn’t raindrops, but a good splash of water, and not my head, but my dear Stymistress’s. Warning: long post…

Her car is now approaching it’s 14th birthday. It’s still in fairly good nick (and very low mileage, given she doesn’t like driving unless absolutely necessary) but a recent cornering move resulted in an inpromtu dousing, and the amount of condensation inside didn’t look good either.

Being nearly 14 years old, it predates air-conditioning as standard, and has a sunroof. Not a cheap, nasty aftermarket one, but a factory-fitted electric one. You might at this point think the sunroof is leaking, but you’d be wrong: many people don’t appreciate that a lot of seals on a car are not designed to actually seal water, and this is the case here: water is meant to get past the glass panel, drop onto a channel below, and then drain out through a pipe. Many similar sunroofs are OEM’d for other marques, by Webasto.
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A Trilogy in Five Parts

Monday, February 3rd, 2014

After many years, I’ve finally got to listen to The Hitchhiker’s Guide to the Galaxy radio show, from the original 1978 episodes to 2004-2005’s Quintessential Phase. I’ve heard it all before, but as the timespan was several years (from borrowing the original two series CDs and then hearing the Tertiary-Quintessential phases on the radio) spanned several years, I bought the entire set in 2012.

Then left it on the shelf, unplayed, along with the MP3 rip I took. The problem is, you need continuity. There’s 13 discs, plus a bonus one, and each disc is around an hour.

My ongoing hate of most radio, and the fact I’m unable to choose a music CD in the morning, has meant that my commute has tended to be accompanied by a Pump-Duse engine and tyre and wind noise, as while VAG’s PD is not the smoothest or quietest, it’s better than the breakfast show. Seems like an opportunity.

So the last few weeks have been filled with Vogons, Marvin, and the Total Perspective Vortex. It’s been great; taking some of the tedium out of the commute, showing just what a genius Douglas Adams was.

The only problem now is that I’m back to diesel knock and tyre roar, with HHGTTG back on the shelf for a few years. Oh well: Life, loathe it or ignore it, you can’t like it.

Braking the Gears

Wednesday, January 8th, 2014

This might bore some, but I guarantee one or two people will find this interesting.

My car is now over 7 years old, and approaching 100k miles. That’s not the magic figure it used to be, but you have to accept a few things will fail- so, outside of the consumables, I’ve had a (surprisingly pricey) gear lever, a similarly pricey blower motor, a few suspension bushes, a dual-mass flywheel, and now, a sensor with a surprising symptom.

The surprising symptom was the DSG gearbox getting increasingly reluctant to change up when in D (full-auto) mode, back in October. No codes stored, and a manual change avoided it.

The fear at this point is a mechatronics failure- the unit is pricey, even refurbished, but that seems unlikely, given the change works manually, and a mechatronics failure is usally a bit more obvious.

Fortunately, someone had been here before, and I remembered his post on good old usenet, describing the symptoms, and dropped him an email. His answer:

I’ve got no fault codes but the symptoms sound a bit similar. In my case , the problem turned out to be a corroded sensor ring on one of the rear wheels.

Replacement wasn’t cheap though. It seems that wheel bearings etc also had to be replaced. Still, a lot cheaper than a gearbox repair.

For some reason the defective sensor input to the gearbox was screwing up it’s speed assessment but wasn’t triggering any warning lights.

Changing them isn’t cheap, as he said: a quality part is around £100, and the fault was very intermittent, so I left it, changing manually if needed. I had to wait until today- when the gearbox suddenly decided that 1st was appropriate at 15-20mph (1st being very, very low in DSG cars), got all confused, decided it wasn’t again, then; finally, lit up the ABS, stability control, and tyre pressure warning lamps, then drove normally. Code stored was:


Address 03: ABS Brakes Labels: 1K0-907-379-MK60-F.lbl
Part No SW: 1K0 907 379 AA HW: 1K0 907 379 AA
Component: ESP FRONT MK60 0102
Revision: 00H13001
Coding: 0006786
Shop #: WSC 06441 785 00200
VCID: 71E3A0F868F54B966BD-8024

1 Fault Found:
00287 - ABS Wheel Speed Sensor; Rear Right (G44)
003 - Mechanical Failure

This is odd. ABS causes no upchange? Previous searching had thrown up this (read post number 4).

The gearbox, in collusion with the ABS and stability ECU, will refuse to change up if the speed signal from the rear wheels (which it gets over CANbus) seems odd, or confuses it into thinking you’re cornering (because you don’t want an unexpected upchange half way around a corner). Sane enough, I suppose, but very unexpected, and, of course, not going to show up on a manual car- it seems the gearbox starts getting confused way before the ABS controller decides the input is dodgy, so a manual car would drive normally until the dash lights appeared.

This oddity is going to be common to cars on the PQ35 platform- my correspondent above had a VW Touran:

Audi A3 Mk2 (8P)
Audi TT Mk2 (8J)[1]
Volkswagen Touran (1T)
Volkswagen Caddy (2K)
SEAT Altea (5P)
Volkswagen Golf Mk5 / GTI / R32 / Rabbit Mk5 (1K)
Škoda Octavia Mk2 (1Z)
Volkswagen Golf Plus (5M)
SEAT Toledo Mk3 (5P)
Volkswagen Jetta Mk5 (1K)
SEAT León Mk2 (1P)
Volkswagen Tiguan (5N)
Volkswagen Scirocco (13)
Volkswagen Golf Mk6 (5K)
Škoda Yeti (5L)
Volkswagen Jetta Mk6 (1K), (16)
Audi Q3 (8U)
Volkswagen Beetle (16)

and maybe others, with a DSG gearbox and that design of rear hub (it seems the wheel bearing, sensor ring, and hub are one assembly).

It does say something (again) about the complex, networked nature of modernish cars. The concept of a sensor in the braking system affecting gearchange is a bit non-obvious, but when you have sensors there anyway, required for (legally mandatory) ABS, and a network to talk over, may as well use them, huh?

Mayoral Car FOI Response

Monday, December 23rd, 2013

My FOI about the Mayoral car has been answered, and with fairly good answers. Here’s the response.

Going through the answers, the model is confirmed as an XJ LWB, in Portfolio trim, which puts it in the middle of the LWB range, just below the Supersport, which would be a bit racy for the mayor, and even more expensive to run and own. As expected, it’s the 275BHP turbodiesel, not the petrol, which at least is the sane engine choice, giving similar performance and better economy and emissions (though of course, there’s better choices for economy):

Screenshot from Jaguar's website showing performance and economy/emissions for the XJ series. Click to enlarge.

Screenshot from Jaguar’s website showing performance and economy/emissions for the XJ series. Click to enlarge.

If you want to look yourself, see Jaguar’s website.

I’m unsure what is meant by

Purchased initially then an options
appraisal is carried out to see which option is cheaper i.e. leasing or
Prudential borrowing. (The options appraisal is being done now).

If any reader can explain that, please do so. Strikes me as an odd thing to do: purchase then investigate the costs [shrug], but at least they paid below list, that being £59288.33 excluding VAT but including OTR costs, according to Jaguar’s site.

The fact that no comparison was made to any other car intrigues me: The new Jag was considered

Like for like replacement on technical specification.

For the old car. At this point I realise I should have asked for an exact model for that (and if anyone fancies getting me a picture of it now it is the deputy Mayor’s car, I’ll follow that up), but on the face of it, it would seem the selection critera were “Buy a Jag, because that’s what we did last time. Make it big and luxurious, and bollocks to the cost”. History of the XJ range can be found here.

It’s interesting that the old DH1 did 6k miles last year, and for the new car’s expected life and depreciation term according to the response, it should cover 42K miles during it’s life. In that time, Walsall council tax payers will be paying £7273.95 per year in depreciation on the balance sheet, though of course, in reality, depreciation is heavier in the first few years, levelling out later on, and even after 7 years, this car will hold some value.

I find it especially damning that no thought was given to the costs of hiring an appropriate car as required: average mileage for a private car is around 15k miles pa, and this very expensive car is covering less than half that: it will be spending a lot of time quietly depreciating in a compound, or on the shiny new car park.

Consumable costs at under £1000/year seem reasonable, and their estimates of fuel costs seem, if anything, slightly pessimistic, depending on if you believe the manufacturers fuel economy figures. The Jag is reckoned to do 36.7-50.4 mpg, diesel is currently £1.349/litre, about £6.13 a gallon. If we take the combined mpg figure, I reckon £821/year, £2463.29 over 3 years.

I’ll accept that the only other 4 or 5 door car on fleet (an 03 Focus estate) is probably not suitable.

So, a reasonable response, but for me it’s shameful that such an expensive car was purchased without exploring alternatives- be they a cheaper car (PDF) , or hire.

Interested readers may like to see what What Car Magazine thought of this car, and what it thinks of running costs (screenshot below). This will be based on owning the car from new for 3 years and doing 12000 miles per year:

What Car? Magazine's estimated running costs for the Jag.

What Car? Magazine’s estimated running costs for the Jag.

The Sound of Silence

Wednesday, December 11th, 2013

I notice that my FOI request concerning Walsall’s new mayoral luxobarge has passed its due date with nothing more than an acknowledgment, and it is to this that the post title refers, rather than the selection of fine engines mated to an 8-speed transmission in said car itself.

Following a discussion on Twatter, we all wondered if the costs were VAT-recoverable, as the price was quoted ex-VAT, and lets face it, VAT on over 50K is pretty considerable.

Well, the answer has been provided by VAT genius @theaardvark, who supplied this link to HMRC, which seems pretty clear to me.

If the car is only used for official purposes, and appropriate documentation is kept, then the VAT can be recovered. This handily means that either Walsall MBC will have to keep an accurate mileage log and account of all costs including fuel (and only use the car for official business), or they’ll have to pay the VAT, so they should be able to answer at least some of my FOI request.

Personally, I can’t wait for the FOI so I can do a bit of analysis on the cost of running the car. As a taster, plugging it’s original registration AF63NRV (thanks to @dhintheman for the photo) into blackcircles.com gives a cost of in the region of £250-330 for each tyre for the sort of thing you’d actually want to fit, as opposed to a ditchfinder.

While I recognise that it’s not going to exactly burn up tyres on official business, I wonder how many local council-tax payers have whole cars worth less than that?

The fuel tank is 81 litres, so at today’s prices, if it’s diesel (as I suspect it will be), that’s £115 or so to fill the tank. One thing is for sure, it’s a pricey car to run.

Troweling it on

Wednesday, November 13th, 2013

After we heard about the 70k Mayoral car, you’d really think that any further news on the subject would be carefully considered.

It would seem not. From an Express and Star story, a quote from Mike Bird, showing great talent for PR again:

If you are a bricklayer you have a trowel, a painter needs a paintbrush and a mayor needs a car.

If we let the terrible analogy pass (or not: surely a Mayor needs a pointy hat and gold chain, following the series, because we’re looking at tools to do the job, not a means of getting there?), then we can go and make a comparison.

My friend is a brickie. A damned good one. I asked him how much a top-notch bricklayer’s trowel, the kind of thing you’d use as a pro, costs.

It’s about £40, for a Marshalltown, in case you want one. I don’t know any painters, so I can’t ask about paintbrushes.

You can buy over 1700 top-notch brick trowels for the price of the Jag….


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