Speed limits

[Martin Cassini]

As if they needed it, local councils are being "given permission" by the DfT (Dept for Transport) to create 20mph zones. There is also talk of reducing rural speed limits to 50. I'm all for low speeds where warranted, but new restrictions will open the door to more expenditure on enforcement. Wouldn't it be more sustainable to reform the system to stimulate appropriate speed based on context?