Disability organisations have launched a campaign to alert the public to the danger of obstructing public spaces.

Activists say the most common hazards are vehicles parked on footpaths, sandwich boards on pavements and bikes locked to poles and railings.

Dublin City Council has said that the vast majority of sandwich boards in its area do not have the planning permission required by law.

Blind activist Barry O'Donnell has encountered so many obstacles on footpaths in recent times that he has taken to wearing a bodycam.

He says he has bumped into a transit van parked across a suburban footpath, into carelessly parked bicycles, and even election posters hung at eye-level from poles.

He has suffered severe headaches sometimes for weeks as a result and has had to have dental work done.

On Monday evening last week, accompanied by an RTÉ cameraman, he walked the length of Dublin's Grafton Street using a dimpled half-metre-wide "guidance strip" which Dublin City Council installed three years ago after consultations with the National Council for the Blind. 

En route, he was filmed bumping into a waist-high pile of cardboard boxes which completely blocked the strip. It appeared to be rubbish awaiting collection by a bin lorry, mostly packaging left over after the weekend's trading.

While most similar waste was deposited by other shopkeepers on the grey pavement alongside the black guidance strip, a number of plastic rubbish sacks blocked Mr O'Donnell's route either partly or completely.

He is keen to publicise the roll-out of these strips by local authorities in other parts of the capital and throughout the Republic.

The initiatives have been promoted by activists like himself and organisations like the NCBI.

In a statement to RTÉ News, Dublin City Council says the guidance strip was publicised around three years ago when it was first laid.

But its spokesperson conceded that since then there has been no direct contact with businesses on the street to alert them to its significance and purpose or to the importance of keeping the strip clear of obstacles. It says this will now be rectified.

The spokesperson added that the council's Access Officer will examine what may be required to alert the general public to the dangers caused by obstacles such as those encountered by Mr O'Donnell.

From early morning in central Dublin, coalition activists were putting stickers bearing the message "Hey This Blocks My Way!" on hazards. The objective was to remind the more able-bodied not to cause unnecessary obstructions in public places.

Campaign spokesperson Laura English says the public has responded well to what she describes as "guerilla stickering".

"One man who we stickered had parked his car on a footpath. He told us he always looked out for a garda or a parking attendant when doing this, but he never thought of the inconvenience he was causing to people using wheelchairs or to others with visual impairments," she said.

The campaign wants an annual Make Way Day declared beginning next year.