The government used to ring-fence money for road safety, but the pot was too small to meet demand - Manchester alone has 500 traffic calming bids, and can only do a handful each year.

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"Whatever investment we have we should ring-fence the money and invest it, " he said.

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"The government needs to ring-fence some money that's dished out to ensure it's spent on road safety, not frittered away on some council initiative, " he added.

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