In front of them sat experts from campaigning bodies, transport research and the police - all ready to get into a proper discussion - and yet the MPs demonstrated that they didn't even know the most basic of facts.
Evidence and statistics were bypassed in favour of opinions and anecdotes on sideline topics.
Such a clear demonstration of lack of research and understanding at this level of seniority would, in any other business, be classed as negligent.
More top news
Londoners who have received new electronic gadgets for Christmas are being advised to take simple steps to protect them from thieves.
The Boxing Day sales got off to a flying start with shops reporting a surge in business during the first hour of trading.
Bus strikes are planned for Monday 29 December and Monday 5 January.