Call me cynical but a lot of times distance seems to take a part. 'running calls' are always red (0min response). Children dragged under cars with multiple # can be amber. Oh, and a broken leg on a horse. (Still sat on the horse!) could be green. Fortunately we can use discretion when it comes to green calls and I often travel on blues when the computer says no. Funnily enough by ignoring the MPDS and going on 'experience' I don't often feel like a prat when I get there. There is nothing worse than putting someone on a spine board after trundling to the job at 'road speeds' only to find that mechanisms have been overlooked by the caller when the call was made. However there have been improvements. It has been quite some time since i have turned up in a rush to take someone to the toilet.