What's the logic of… cycle helmets?


Cycle helmets; they're everywhere now. Almost everyone on the roads who's decked out in lycra and/or high-visibility clothing is wearing one of these turtle skeletons. At first glance, it makes perfect sense; you're safer wearing one that not wearing one and every cyclist in their right mind should wear one. This straightforward view is backed up by a Department of Transport study [that] found that cycle helmets worn correctly could prevent an estimated 10-16 per cent of fatalities.' Simple, eh?

But if helmets are that important, why aren't pedestrians wearing them? In my experience, I've had just as many close shaves while crossing the road than I have while cycling on it. The pedestrian crossing near my house, for example, is an absolute death-trap. If one side of the traffic stops for you on that crossing, DO NOT CROSS ALL THE WAY! YOU WILL DIE! You must cross half way and then stick your head out. From there, you can get a grandstand, front row seat view of the cars coming around the corner and travelling past you at high speed in the other direction, seemingly oblivious to the fact that you're an upright, bipedal bag of blood wrapped in some skin who's standing on some stripes, trying to get to the supermarket. Eventually, one of them stops or possibly screeches to a halt and you finally cross.

It's not just me. Here's a stat from a BBC website article:
Motorbikes win easily, but pedestrians aren't far behind bicycles. You think cycling is dangerous? It is! But only a third more dangerous than crossing the road!

There's another factor with the whole 'cyclist in a helmet' plan. It's called human psychology.

When it became compulsory for people to wear seat-belts in cars in Britain, this clear benefit was somewhat undermined because, on average, motorists drove faster if they wore seat-belts because they felt safer with them on. If you dress someone up like Robocop, they will try to smash through walls because they feel invulnerable. They won't say 'oh, that wall looks like it's got breeze-blocks and my Robo-suit is only tested on Victorian Brick. I'd better leave it be.' They'll have a go because they've got hydraulic arms and kevlar! You could call this the Titanic Problem; if the person in charge thinks they're very secure, they take bigger risks. We're also rubbish at accurately assessing what our technology can do for us; we just haven't evolved enough. We're like frogs who try to mate with plastic bottles. It looks good, it feels good, it must be okay!

Putting amphibians shagging polymers aside for a moment, there's yet another factor in wearing a helmet while cycling that undermines the safety benefit.
A fascinating cycling study found that when a cyclist wore a helmet, motorists gave them less room because the motorist unconsciously viewed the cyclist as being better protected. 'Oh, look, she's got a bird's nest on her head! I can cut her up without a care in the world now because the top of her head is protected by little weaves of high-impact plastic.' I have personally noted this problem while cycling with a helmet. Bizarrely, the most effective apparel I've found for warding off the attention of cars is a flapping jacket. They give you loads of room if you're wearing one; it's some sort of force field. This odd, as it means that drivers are like horses. Then again, drivers give horses loads of room too, rather than driving up close to them and shouting that they should get off the road and leave it to those who pay road-tax. Perhaps they feel kinship with them?

Human psychology therefore seriously undermines that 10% physical benefit while wearing a helmet. You might be a little better protected but your likelihood of being crushed like a bug has significantly gone up after putting it on. By comparison, pedestrians - who get killed almost as much as cyclists - only need to put them on when crossing the road. Why don't they carry one for their protection? Why are they being so irresponsible over their own safety?