Madam, - Perhaps Don Heenan (July 3rd) missed Frank McNally's Last Straw column of November 3rd, 2001, in which he shone some light on this odd activity.
Frank McNally wrote: "The 'baby on board' sign is not an appeal to other drivers, at all; it's a warning. It's a responsible act by civic-minded parents who realise that, not having slept properly for weeks or even months, they are a danger to themselves and other road users. The sign's message is: 'Increase your braking distance now! I'm liable to do anything.' " Yours, etc.,
JEROME CURTIN, Harty Place, Dublin 8.