Words to Describe crossings

How crossings often is described ("________ crossings")

• consecutive
• regular
• shallow
• such
• pelican
• principal
• zero
• successful
• many
• several
• temporary
• grade
• rough
• cultural
• additional
• safe
• fewer
• boundary
• important
• innumerable
• main
• minor
• pedestrian
• atlantic
• transatlantic
• easy
• arteriovenous
• difficult
• street
• border
• unmanned
• unprotected
• daily
• clandestine
• illegal
• double
• line
• frequent
• equatorial
• occasional
• dangerous
• controlled
• sea
• unauthorized
• hazardous
• possible
• road
• numerous
• successive
• overhead
• racial
• ocean
• subsequent
• major
• perilous
• busy
• multiple
• level