I
You are covered for your entire journey, provided it is less than 183 days
"Medical emergency cover" specifically cover you during your "Trip" where a Trip definition is the duration during which you are away from home and no more than 183 days.
There are no specific exclusions for injuries sustained during public transportation or taxi.
In fact, you are "specifically" covered for events occurring on a "Common Carrier Conveyance"
"
Common Carrier Conveyance means an air, land or water vehicle (other than a rental vehicle or Private Charter aircraft) operated by a common carrier licensed to carry passengers for hire (including taxis and airport limousines). "
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- Loss arising while riding as a passenger on, or transport to/from a Common Carrier Conveyance; "
It would make no sense to not cover events that would arise from the mere act of travelling.