The phrase "a series of checkpoints" is correct and usable in written English.
It can be used when referring to multiple points of verification or assessment in a process or journey.
Example: "During the project, we will need to pass through a series of checkpoints to ensure everything is on track."
Alternatives: "a set of milestones" or "a sequence of evaluations".
Along the main approaches to the town, security forces oversaw a series of checkpoints, he said.
Security is airtight, with a series of checkpoints around the Olympic Park.
Now brand managers no longer make decisions unilaterally but work through a series of checkpoints with manufacturing and sourcing managers.
Later passengers flew into Baledogle, a former military base 60 miles from Mogadishu, then were bused past a series of checkpoints controlled by feuding militias.
Still, Iraqi and American officials have "locked down" Ramadi because of security concerns, requiring residents and visitors to pass through a series of checkpoints, he said.
There are also competitions called alleycats, in which bicyclists pick their own routes between a series of checkpoints where monitors stamp their paper manifests.
Cell cycle progression is monitored by a series of checkpoint mechanisms that maintain genome integrity and cell viability [1].
The cell cycle is monitored by a sequence of molecular and biochemical events including a series of checkpoint mechanisms to ensure completion of biochemical reactions unique to each phase of the cell cycle prior to initiation of subsequent phases [ 3, 4].
The latest DUI checkpoint is part of a series of recent checkpoints funded by grants from the California Office of Traffic Safety.
A series of 75 checkpoints ram home the pressure: if a runner is not at a checkpoint by a specified time, he is pulled out of the race.
To reach the same destination, Palestinians may have to go five times the distance through a series of grubby checkpoints.
