The bar chart gives information about the decrease of traffic accidents in Bridgewater due to the construction of extra lanes in the city.
Overall, one can see the reduction of traffic accidents on all the motorways taken into account, M1, M2, M3, M4 and M5.
The most striking improvement occurs in motorway 5, where traffic accidents drop off dramatically from just over 16 to just under 6 per kilometer. A similar improvement is seen in motorway 1, that has a decline of traffic accidents after the construction of extra lanes, from about 13 to just over 4 per kilometer.
In contrast, the construction of extra lanes does not produce the desired effect in motorways 2, 3 and 4. In fact, in these roads the number of traffic incidents ONLY decreases respectively from over 16 to over 14 per kilometer in motorway 2, from 4 to 2 per kilometer in motorway 3 and from over 4 to 2 per kilometer in motorway 4. 
The bar chart gives information about the decrease of  
traffic
  accidents
 in Bridgewater due to the construction of extra lanes in the city. 
Overall
, one can  
see
 the reduction of  
traffic
  accidents
 on all the motorways taken into account, M1, M2, M3, M4 and M5.
The most striking improvement occurs in motorway 5, where  
traffic
  accidents
 drop off  
dramatically
 from  
just
  over
 16 to  
just
 under 6 per kilometer. A similar improvement is  
seen
 in motorway 1, that has a decline of  
traffic
  accidents
 after the construction of extra lanes, from about 13 to  
just
  over
 4 per kilometer. 
In contrast
, the construction of extra lanes does not produce the desired effect in motorways 2, 3 and 4. In fact, in these roads the number of  
traffic
 incidents  
ONLY
 decreases  
respectively
 from  
over
 16 to  
over
 14 per kilometer in motorway 2, from 4 to 2 per kilometer in motorway 3 and from  
over
 4 to 2 per kilometer in motorway 4.