Madrid's M40 warns drivers about the eclipse, drivers respond with irony

The M40's eclipse warnings: prevention or farce

Driving during a solar eclipse is not classified as a high-risk activity. At least it wasn't until the electronic signs on Madrid's M40 ring road turned it into an emergency operation with three messages that have raised more than a few eyebrows.

The signs warned: "Do not stop on the hard shoulder during the eclipse", "Do not drive wearing eclipse-viewing glasses" and "Do not slow down during the eclipse". The logic seems impeccable: with the glasses on, peripheral vision suffers; pulling onto the hard shoulder to watch the sky is a recipe for a multi-car pile-up. But the communication has had the opposite effect: drivers have responded with irony.

The sharpest reaction came with the neologism "cataclipse", a blend of cataclysm and eclipse. From the driver who announces he will stop just in case anyone gets distracted, to the one who points out that, with temperatures at 27 degrees, people will keep filling the municipal pools even if a sign warns them not to. The pool sign anecdote reinforces the thesis that the saturation of warnings has turned prevention into a meme.

What is the real risk of driving during an eclipse?

The danger lies not in the phenomenon itself but in behaviour: stopping on the hard shoulder or braking suddenly causes traffic jams and accidents. The signs aim to prevent this, but the absence of messages about switching on headlights – as daylight drops in the middle of the day – has been flagged as a serious shortcoming.

The expectation is that on the day of the eclipse, exits towards viewing areas will be gridlocked and hard shoulders will fill up with onlookers, as already peine at previous astronomical events. Given that track record, the next campaign will most likely arrive with an instruction manual and an extra dose of irony: because the warning will have to compete with the scepticism it has itself sown.