Yes. Class B CDL applies to all single vehicles with a GVW in excess of 26,000 lbs.
Not sure what you mean, exactly. Class A is considered the "higher" classification, yes. If you have a Class A CDL, you can operate vehicles requiring that class of licence or any class below that. You could operate a vehicle requiring a Class B CDL, for example, but a driver with a Class B CDL wouldn't be permitted to operate a combination requiring a Class A CDL.
Yes. You can drive that vehicle with either a Class B or Class A CDL.
No. California does, however, have non-CDL class A and B licenses which are required for non-commercial vehicles over 26,000 GVWR.
No. Air brakes don't determine whether or not a CDL is required for a vehicle, and CDLs are for road vehicles - a trolley is a rail vehicle.
Depends on which Class of CDL. A driver with a Class C CDL is not licensed on that vehicle. A driver with a Class B CDL can drive that combination only if the GVW of the trailer is less than 10,000 lbs. A driver with a Class A CDL can drive it.
You may only have one license. If you have a Class A CDL, you can operate a vehicle requiring a Class B or Class C CDL, so long as you have any endorsements necessary for the vehicle type (e.g., tank endorsement for tank vehicles, passenger endorsement for passenger vehicles, hazmat endorsement for vehicles hauling hazardous materials, etc.).
To drive a cement truck legally, you need a class B CDL (Commercial Drivers License). At 18, you can apply for a class B CDL.
Restrictions include: B - corrective lenses required D - Anatomical Donor M- Restricted to Class B and Class C Passenger vehicles (This restriction goes with a P - passenger endorsement on a class A CDL) N- Restricted to class C Passenger vehicles (This restriction goes with a P - passenger endorsement on a class A CDL)
Yes, you would. Without the trailer, you could operate it with either a Class A or Class B CDL.
Some states still require that a Class B licence be obtained for single vehicles with a GVWR of over 26,000 lbs, even if they are exempted from requiring a CDL. Examples include firefighting equipment, registered farm use vehicles, and recreational vehicles. Some states have licences equivalent to the CDL class which would be required, had that vehicle required a CDL to be driven.
If you don't have a CDL, you can't operate a commercial vehicle. You can't even so much as be in actual physical control of the vehicle (in the driver's seat with the motor running). Even if you possess a non-CDL Class A or B licence, this holds true - a non-CDL Class A/B only permits you to operate vehicles which fall under the exemptions for CDL requirements.