exiting slip roads and advice for drowsy drivers on the motorway. For more information on motorway driving, check out our ultimate guide. By 1968, the sixth edition brought about photographs and 3D illustrations, bumping up the price to six new pence.

The seventh edition in 1978 was a far cry from the first edition. With 70 pages it introduced the Green Cross Code for pedestrians and the orange badges for people with disabilities. With the rise in car crime, the new Code also included advice on vehicle security. This format was expanded upon in the 1990s with a taller booklet. It also introduced a section for the driving theory test which has since become a part of the Highway Code we use nowadays.

The Highway Code now

By 2011, the HighwayMeasurement of inspiratory flow in children with acute asthma.
Dry-powder inhalers (DPIs) have been proposed for treatment of acute asthma. Different DPIs vary in their inspiratory resistance and have different recommended optimal peak inspiratory flows (PIFs). Reduced PIF during acute asthma may result in inadequate drug delivery to the lungs. Our aim was to measure the inspiratory flow in relation to inspiratory resistance during acute asthma in children presenting to the emergency room. School-age (range, 6-18 years) children were referred to the emergency room for acute asthma. PIF measurements were performed by In-Check Dial trade mark device with simulated airflow resistances equivalent to Turbuhaler, Diskus, and free flow. Percent change in PIF between remission and acute asthma (%Delta) was correlated with percent change in clinical score (CS) and percent