limits. you are just as dead when you are hit by a vehicle travelling at 40mph [probably using a mobile] in a 20mph zone, as you are when you are hit in a 30 mph zone. We need to address [and enforce] 1]... breaking the 30 mph limit. 2] ...mobile phone usage. 3] ...to a lesser extent, educating cyclists that they do not ride on pavements, terrorising pedestrians, and that red traffic lights and no entry signs etc do apply to them. 2.3 mjllion spent on education would be far wiser than this farce Come on people. It's simple. The cost to you- a few minutes difference in your journey. The benefit to you, and everyone, and everything- a very real, tangible, and hugely enjoyable improvement. It does need to be kept simple though. As someone pointed out, if people are looking down at their speedometers to adjust to an Nth change in speed limit during a journey, this could result in an unnecessary decrease in attention to the road. Whereas we could all learn the feel of 20mph very quickly. It's so much more relaxing! So please let it be a straight, citywide application with just the odd obvious exceptions such as dual carriageways. Here's a fact. If you increase the commute time by 6 minutes for each person then for every 100,000 persons you waste the equivalent of 27 lives every year. Now compare that to the non-existant evidence showing that dropping speed 30 -&gt; 20 can decrease