Can police use a roadblock during a pursuit?
Yes, they can use roadblocks as long as they are reasonable. You
must provide the opportunity for the violator to stop prior to
hitting the roadblock. So you would not setup a roadblock around a
blind corner, nor would you shine bright lights towards the driver
not allowing them to see the roadblock. Great answer, they also use
the spike strips to throw in front of your car. That way the tires
get blown and they can do it quickly on the spot, without having to
worry about organizing a roadblock. In the UK, the roadblock would
have to be approved by the Pursuit Manager, normally a control room
Inspector, or a rear observer within the force's helicopter, and it
would be placed strategically so that they do not disrupt traffic
too badly, or endanger the life of the public.