A Labour-led Scottish Government would be the greenest ever, Kezia Dugdale has claimed.

The Labour leader said her party would overhaul public transport, ban fracking and aim to generate half of Scotland's electricity, heating and transport needs from renewables by 2030.

Speaking as she prepared to take part in annual mass bike ride Pedal on Parliament, Dugdale said her party's plans were more ambitious than the SNP's

She said: "The next Labour Scottish Government will be the greenest government that Scotland has ever had. With our promise to ban fracking and overhaul Scotland's public transport system, we are going much further than the SNP ever will to tackle climate change.

"We want 50% of our electricity, heat and transport demand to come from renewable sources of energy by 2030. Unlike the SNP, we won't set targets and consistently miss them - we'll match words with actions."

Dugdale added: "Under the SNP only 30% of us are commuting to work by public transport, walking and cycling - a figure that hasn't shifted in a decade.

"With our plans to regulate bus services, introduce a single payment on public transport and invest in cycling we will deliver a culture change in the way people travel across Scotland."

The Scottish Greens claimed Labour were belatedly adopting Green policies.

The party's environment spokesperson Mark Ruskell said: "While it is heartening to see Labour adopt Green policies in the run up to the election, only the Scottish Greens have the credibility, the authenticity and the track record in parliament to maintain the Green agenda.

"Given that Labour voted against Alison Johnstone's amendment to ban fracking in May 2014, how are voters to believe their claims?

"Only a bold Holyrood, with a strong group of Green MSPs, will hold the government to account and demand the action that's needed on sustainable transport, on renewable energy and on delivering a coherent set of policies."

Greens co-convener Patrick Harvie also took part in Pedal on Parliament, and said his party would invest 10% of the transport budget in "active" travel like cycling or walking.

He was joined by the SNP's Derek Mackay, who also pledged "record investment" in active travel.

Mackay, the party's business convener, said the SNP would launch a national walking strategy and work to better integrate public and active transport.

He said: "Over the last few years, active travel has been kept high on the political agenda - thanks in no small part to the dedication of campaigners.

"The SNP Government recently held the first ever Active Travel Summit - which was the no. 1 priority from the Cycling Action Plan for Scotland - and this forum has helped form our ideas for the next few years.

"The SNP have put in place record investment in cycling and walking - and if re-elected we will continue to do so over the life of the next Parliament.

"We're determined to meet our vision of 10 per cent of everyday journeys being made by bike by 2020 - in doing so, we need to explore what more we can do to improve the integration between active and public transport, and to make cycling more appealing to certain groups."

Mackay added that local authorities would need to play their part in increasing active travel.

The Lib Dems said they had a "three-point plan" to encourage more people to cycle and walk.

Willie Rennie said his party would increase the share of the transport budget spend on active travel, make streets safer for pedestrians and cyclists with more dedicated cycle lanes, and revise current cycling guidelines to reflect international best practise.

Cycling in to the Pedal on Parliament event from Fife, Rennie said: "Active travel helps keep us fit and healthy and cuts our carbon emissions but increasing the number of journeys made by bike or on foot will not happen by accident.

"Improving safety is vital for that and our plans would see bike safety put at the heart of the planning process.

"We need action to increase investment in both cycling and walking, improve dedicated cycling infrastructure and ensure that people are confident that they can ride their bike safely."

The Scottish Conservatives have been approached for comment.