Unless people obey the laws of the road and people actively take account of the signals that we put in, there's no amount of traffic engineering that we invest in that is going to save people's lives.
Some of the cases that we've seen in the last few days really make your heart bleed because you can see that people have taken decisions that really did put their lives in danger.
You cannot blame the victim in these circumstances. But what you can say is that when people make decisions on the road that are very risky - jumping red lights, moving across fast-moving traffic in a way that is completely unexpected and without looking to see what traffic is doing - it's very difficult for the traffic engineers to second-guess that.
I'm appealing to all cyclists, as well as all motorists, do think of the laws of the road, because if you take these hasty, rash decisions that we're seeing sometimes, then you will be endangering your life.
More top news
Ramanodge Unmathallegadoo, 50, has been charged with the murder of 35-year-old Sana Muhammad.
In a tumultuous morning, Cabinet members resigned and a letter of no-confidence in Theresa May was submitted.
Banksy's 'Slave Labour' mural has been sold to a buyer who vows to whitewash it in protest at the selling of street art.