Accidents Result of Disorder, Codes to Prevent, Automobile Accidents Lead in Number. Causes: The Driver -- Mentally or Physically Unfit, Ignorant, Indifferent, Reckless; Driving and Operating: Recklessness, Speeding, Around Sharp Turns, Passing Cars. Horns. Stopping Cars on Grades, in Streets, etc., Backing. Other Forms of Carelessness. The Car: Skidding, Brakes, Flexibility, Steering and Turning Ability, Lights, Unlighted Vehicles, Speedometer. Bad Roads: Slipperiness -- High Crowns, Embankments and Guard Rails, Super-elevation -- Rule for, Clear Vision, Curves, Bridges and Culverts. Railway Crossing Accidents: Prevalency, Elimination of Crossings -- Cost, Automobile Drivers Careless -- Observations, Methods of Mitigation; Bridge Clearance. Pedestrians -- Jay-walkers, Obstacles that Obscure Vision, Pedestrians on Country Roads, Slow Going Vehicles, Bicycles. Road and Traffic Regulations: Development of, Council of National Defense Code, Education Necessary. CHAPTER XII HIGHWAY ESTHETICS 382 Indispensable Elements of Architecture -- Stability, Utility, Beauty. Esthetic Sense -- Applied to Roads, to Landscape Gardening. Styles -- Natural and Formal. Application to Roads. Varieties of Road and Street Trees -- List; Shrubs -- List; Climbers -- List. Semi-formal Style. Telephone and other Poles, the Ideal Section, Legislation Necessary. Local Conditions Determine Planting. CHAPTER XIII AIDS AND ATTRACTIONS TO TRAFFIC AND TRAVEL 418 Pleasure Riding -- Extent, Advantages to a Community to Have Tourists Pass through, Ranking and Parking, Parking Spaces a Convenience to Motorists -- Space for and Angle of Parking, Location of Parking Spaces, One Way and Rotary Traffic, Opera House Traffic, Public Garages -- Several Story Garages. Terminal Stations -- Omaha, Poughkeepsie, Elsewhere. Gas, Air and Water Stations, Named and Numbered Roads; Marks, Signs and Guides -- Distance and Direction Signs, Letters and Colors, Warning Signs, Map Signs, Detour Signs, Location of Detour Markers, Dummy Cop, Semaphores, Signal Lights and Colors, Road and Street Lighting, City Traffic Lighting, Traffic Officer, Semaphore and Towers. Touring: Prevalency and Pleasures of, Camping -- Grounds, Caravans, and Equipment. Camp Sites, Hotels, Parks, Information Bureaus and Agencies. INDEX 465 LIST OF INSERTS 1. STORM KING HIGHWAY _Frontispiece_ A Great Engineering Project Along the Hudson between Cornwall and West Point, N. Y. PAGE 2. THE APPIAN WAY 22 Showing the original Paving Stones laid 300 B.C.