Current European legislation on children’s bicycles is unclear and makes a distinction between bicycles with a maximum saddle height of less than 435 mm (EN 71-1), bicycles with a maximum saddle height of more than 435 mm and less than 635 mm (EN14765) and bicycles of over 635 mm (EN 14764).

30 air changes per hour if the compartment is fully enclosed and the clear height is more than 2,30 meters.

9.14.1. Height above road surface, upper edge:

'significant wave height" or ("h s ") is the average height of the highest third of wave heights observed over a given period;

(a) “Forest ecosystems” means "forest" being land with tree crown cover (or equivalent stocking level) of more than 10 percent and area of more than .5 ha., the trees being able to reach a minimum of 5m. at maturity in situ, and "other wooded land" being land either with a tree crown cover (or equivalent stocking level) of 5 to 10 percent of trees able to reach a height of 5 m. at maturity in situ; or land with a crown cover (or equivalent stocking level) of more than 10 percent of trees not able to reach a height of 5 m at maturity in situ (e.g. dwarf or stunted trees) or shrub or bush cover;

(a) “Forest ecosystems” means ‘forest’ being land with tree crown cover (or equivalent stocking level) of more than 10 percent and area of more than 0.5 ha., the trees being able to reach a minimum of 5m. at maturity in situ, and ‘other wooded land’ being land either with a tree crown cover (or equivalent stocking level) of 5 to 10 percent of trees able to reach a height of 5 m. at maturity in situ; or a crown cover (or equivalent stocking level) of more than 10 percent of trees not able to reach a height of 5 m at maturity in situ (e.g. dwarf or stunted trees) or shrub or bush cover;