what do mobile speed cameras detect

Mobile speed cameras are the sneaky little devils of road enforcement, designed to catch you when you least expect it. They primarily detect your vehicle's speed using radar or LIDAR technology. If you're pushing past the speed limit, they snap a photo of your number plate to mail you a lovely fine. Sometimes, they can also pick up other offences like running red lights or seatbelt violations, though that's more the domain of fixed cameras. So, in short: speed and your inability to resist a lead foot.