Related by context. Frequent words. (Click for all words.) 33 safer 30 smarter 28 environmentally friendly 26 faster 26 efficient 25 safe 25 pedestrians 24 quicker 24 risky 22 better 22 safety 22 Safety 21 sensible 21 bigger 20 sustainable 20 simpler 20 farther 19 safely 19 comfortable 19 healthier 19 dangerous 19 cleaner 19 enjoyable 18 more 17 easier 17 Safe 17 newer 17 lighter 17 cheaper 17 than 16 closer 16 stronger 16 economical 16 inexpensive 16 desirable 16 happier 16 less 15 affordable 15 heavier 15 unsafe 15 accessible 15 harder 15 expensive 15 somewhere else 15 fewer 14 alternatives 14 secure 14 reliable 14 attractive 14 clearer 14 richer 14 tougher 14 encourage 14 convenient 13 worthwhile 13 useful 12 resistant 12 feasible 12 dangers 12 greater 12 policing 12 shorter 12 proactive 12 warmer 12 alternative 11 improvements 11 risk 11 sooner 11 hazards 11 tighter 11 brighter 10 improve 10 hazardous 10 improving 10 hazard 10 viable 10 improved 10 harmful 10 longer 9 stressful 9 vigilant 9 poorer 9 responsive 8 stricter 8 criminals 8 worse 8 elsewhere 7 protecting 6 effective 6 prudent 6 danger 6 prosperous 5 safe haven 5 beneficial 5 protected 5 stable 5 acceptable 4 vulnerable 3 protect 3 harm 3 safeguard