We use online training to keep our drivers up-to-date.
DT Driver Training have several fairly-priced courses and I would recommend them without hesitation.

You are right to take emotion out of the picture and focus on a risk based approach, the risk is the issue here.
However there are risks involved with getting vaccinated as well and these also need to be assessed. I believe we a a long way from knowing all the possible side effects and employers could be in a vulnerable position if they expose their employees to these risks by "making" them have a jab.
There are too many unknowns on either side of the coin. I will be recommend my directors that they should stay away from influencing employees decisions in this matter and simply prepare the business for a possible outbreak by assessing the current risks only.

With their permission I hijacked 20 minutes of their BOD meeting so a H&S Consultant could talk to them about the changes to their duties and obligations under the new Act. This went a long way toward increasing the awareness among them and helped create buy-in.

We are on a much smaller scale here but 8 of our people did Stage one of Advanced Driver training and since then, on two occasions drivers have stated that their near miss would have resulted in an accident if not for their training. We are now arranging for Stage 2 training.

Almost always, when delving deep for a root cause in comes down to training, communication or systems failure, all of which are responsibility of management.

We have been using Safe365 for about 6 months now and find it ideal for workers out in the field. Incidents, risks and hazards can be loaded through a mobile device and submitted to the central website.
It's good for reporting and also has built in processes for improving performance.