id	keyword
ajst-454	bicycles
ajst-454	data
ajst-454	travel
ajst-454	time
ajst-454	system
ajst-454	people
ajst-454	number
ajst-454	characteristics
ajst-454	analysis
ajst-454	use
ajst-454	users
ajst-454	research
ajst-454	stations
ajst-454	sites
ajst-454	development