Readers reply: should speed cameras be hidden?

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts• This week’s question: How can we learn from unrequited love?What’s the point of having speed limits if camera-warning signs and apps allow drivers to slow down in advance – then just continue speeding? Maybe the UK government in its new consultations on road safety should add the question of hidi