channelize

To form a channel, especially by deepening or altering the course of a river.

To transmit through a channel.

To multiplex (messages) through a single line.

To direct into a specific course or pathway; to channel.

It is particularly confusing when the motorist is channelized across the highway centerline. For long-term closures conflicting pavement markings must be removed or obliterated before relaning the roadway.