Engineering Aspects of Highway Safety: Lay-out of Junctions and Other Aspects of Road Design in Relation to Highway Safety |
Common terms and phrases
accidents angle of intersection approaching assumed design speed carriage-way central island centre channelizing islands conflict cross slope crossing curb cycle tracks deceleration lane directional islands divided highway drive system drivers E/CNII/TRANS/SUB edge of pavement ft radius grade-separation gradient hazard INNER REAR WHEEL intersecting highways intersecting roads intersections at grade junction keep-right system lay-out major road MAXIMUM OVERHANG median strip MINIMUM RADIUS minor road non-preference road normal one-way OUTER FRONT WHEEL PARKING LANE passenger vehicles PATH OF INNER PATH OF OUTER pedestrians preference road radial roads radii ramp reduce refuge islands right angles rotary design speed Rotary intersection rotary road width rotary roadway safe safety semi-trailer separate turning lanes shown in fig sight distance signals STOP sign stopping distance superelevation traffic density Traffic Engineering traffic flow traffic lanes traffic movement traffic streams turning movements turning radius type of intersection TYPE TRAFFIC weaving distance weaving length