The new system, known as Transcalm, is made from rubber and contains a fast working air valve which can deflate the hump.
Cars travelling faster than the set limit will not deflate the ramp, which will then act like a conventional speed hump.
But it will NOT deflate
for motorists exceeding the speed limit.
The SleepTec sofa sleeper mattress uses a built-in electric pump that inflates or deflates
the air mattress in less than a minute.
He tugged in vain at the rip cord which deflates
the balloon but it was stuck.
WE all experience events which boost us - promotion, finding a partner, having a baby or passing an exam - and those which deflate
self-esteem - being burgled, losing a job, ending a relationship or being bereaved.