The book : The curious incident look up the boom 2-19

the unique function that the video specifically ascribes to sins near tunnels is "prohibiting certain cargo". tunnels have specific control signs such as minimum and maximum speed, the appropriate use of headlight and prohibited cargo. for your own safety it is important you understand the signs when approaching a tunnel.

i need alittle more detalis

the second sentance should look more like this: the doughnuts we bought were the best we had ever tasted.