Almost half a million people will need to obtain a photo card if they want to ride a bike in NSW from next year.

That is according to Roads and Maritime Services figures obtained by the Greens, who are pushing to over-turn massive increases in fines levied on cyclists who do not wear a helmet or who disobey traffic laws.

About 468,000 people in NSW have neither a driver's licence or photo card, RMS figures obtained by Greens MP Mehreen Faruqi showed.

That means those who want to cycle from next year, when the requirement to carry identification comes into force, will have to pay a $51 fee for obtaining a photo card.