The chart shows that extra lanes were added on a busy road to reduce accidents per kilometer on Bridgewater. Overall, the number of accidents decreased on all five motorways after extra lanes were added. The largest reductions were seen on M1, M4, and M5, while M2 and M3 had the smallest decrease.
The largest reduction was recorded on the M5, where the number of accidents fell from 17 to 7 per kilometre. This was followed by M1, where the accidents decreased from 13 to 5 per kilometre. In addition, the M4 also shows a significant reduction. The number of accidents fell from 7 to 2 per kilometre.
Meanwhile, the smallest reductions were seen on the M2 and M3. On the M2, the number of accidents decreased by only 2, from 17 to 15 per kilometre. Similarly, the figure for M3 fell by 2, from 4 to 2 accidents per kilometre.
