Why does Joyce think the government has to mandate anything? If the taxi drivers want extra safety equipment do they not have all the incentive they need to install it? After all it is the taxi driver's lives that are at risk, that would seem like the best possible incentive to attend to safety measures.And I still say that. Matt Nolan at the TVHE blog takes a similar line. Eric Crampton claims its just an anti competition measure. May be, but show me who is being kept out of the market. Is the cost of a camera really so high that it will keep people out of the market? Don't see it myself.
More likely the taxi federation is just trying to score brownie points with the government so that when the federation wants something in the future the government will play ball. Either that or both the government and the taxi federation are working on "we must do something about this problems, this is something, lets do it" type logic.
Update: Not PC on Nanny Joyce on camera.