Right now, the least amount of space between signals is about every 300 feet, except in special instances, like curves.

Of course not, though it is permissible in this special instance.

Being a special instance of lattices, they are studied both in order theory and universal algebra.

Synchronized signals all change at the same time and are only used in special instances or in older systems.

However many of these meanings are special instances of the definition which follows.

There were special instances like the September 11, 2001, terrorist attack where they had unscheduled specials.

And previously he had been a dog in only one special instance.

That is essentially correct, except for certain special instances.

We take a negative view of this with the exception of certain special instances.

This, latest, theory considers public law to be a special instance and subset of private law.