Further details of these concessions are available at GOV.UK: Toll Concessions.
In some cases you will have to apply in advance to qualify for a concession. As toll operators sometimes vary their concessions it is a good idea to check with the owners or operators before you travel.
Tyne Tunnel Disability Exemption Permits
Disability Exemption Permits are available to use on the Tyne Tunnel.
To apply, go to Tyne Tunnel toll disability exemption permit.
Alternatively call 0191 262 4451, or email firstname.lastname@example.org.