Key features ofthe first graph are that the youngest people in secondary schools are involved in rooad accidents the most(between the ages of 11 and 12). This is most likely because they will be walking or taking the bus by themselves in most situations without a parent to watch over them.
If approximently 750,000 students a year got hit then aroung 10% of 11 or 12 year old got hit.
Boys are being hit around 25% to 35% more than girls. I think this is becauase they tend to have things such as footballs on them that are chased after into roads.
Cycling is the safest way of transport andwalking is the least. It would help to know the percentage of use for each of the transport and how often things such as cars and busses break down.
People might be more likely to cause road accidents if it is foggy or rainy or someone is drunk driving. A certain transportation may be used as it is quicker to get somewhere using it or is the only means of transport you are willing to use as bus fares can be expensive.