The call for a crackdown is posing equally vexing problems at the border's busiest crossings.

The Liberal Party opposed the arming of border guards, offering instead to add armed officers of the mounted police at the busiest crossings.

The route is one of the busiest crossings on the CalMac network, and dolphins and basking sharks can often be spotted en route.

On the busy crossings between Sumatra, Java, and Bali, multiple car ferries run frequently twenty-four hours per day.

The crossing that forms the northern end of the Goerdelerring and the northwestern edge of the city circle is one of the busiest crossings in Leipzig.

Most of the additional troops were headed to El Paso and Laredo, the busiest commercial crossings.

Bridges would also be built at the busy crossings with Route 25 in Smithtown and Nicolls Road in Stony Brook.

When the border first re-opened after the attacks, intensified inspections made the wait at the busiest crossings as long as 15 hours.

And that border, connected by four bridges, has become one of the busiest crossings in the world.

Coming soon to London's Oxford Circus - a Tokyo-style scramble as used at Shibuya, one of the world's busiest crossings.