In most drivers it is implemented as an int, and so actually can hold other values.
It's used to predict safe and unsafe driving abilities in older drivers.
You can drop in other drivers (if you want), but again, you'll have to make some changes to the core.
Certainly there will be an increase in happy drivers!
Insurers have identified a new risk category in drivers: women over 60.
Our casualties in trained drivers, gunners, and commanders had been too great.
This increase was introduced to try to stem the increase in drivers ignoring the law.
The castle is highly visible from surrounding areas, and in particular drivers on Loop 202 are offered an excellent view of the site.
The rest of it is abstracted away and done in drivers.
Nevertheless the team came second both in drivers' and teams' championship.