'Reasoning from Evidence' Traffic Accidents - Example #4 Malcolm Swan Mathematics Education University of Nottingham Malcolm.Swan@nottingham.ac.uk Jim Ridgway School of Education University of Durham Jim.Ridgway@durham.ac.uk The aims of this assessment are to provide the opportunity for you to: · use appropriate graphs and/or diagrams to analyze data · reason clearly and convincingly. In this task, you are a Road Safety Advisor for Smallville. Your task is to produce some suggestions about how road safety in Smallville might be improved. ____________________________________________________ To help you, below you have a map of Smallville and a database of traffic accidents that took place during the last year. These figures show the time and place of the accident, details of the victim and the type of vehicle that caused the accident. (Times are given as decimals, to make graphing easier). Your task is to: 1. Find the trouble spots in the town. 2. Try to decide why they are trouble spots. 3. You have $100,000 to spend on improving road safety. What recommendations do you have? Here are some things that could be done with costs. Educational campaign in the schools $4,000 Publicity campaign in the town $10,000 Changing speed limit signs $4,000 Pedestrian crossing $16,000 Traffic Lights $40,000 Footbridge $90,000 Accident Data Sheet Map of the Neighborhood