Portable Traffic Signals
Portable Traffic signals for traffic control can be used at most sites that have a length of 300 m or less. However, it should be ensured that the exit from the restricted length of road is not blocked. Otherwise tailback will occur which will stop traffic travelling in the opposite direction from moving when the light change to green.
2. Under no circumstances these should be used at works that straddle a railway level crossing nor to control road traffic within 50 m of level crossing equipped with thin red light traffic signals.
3. These must be controlled manually. The crossings own road traffic signals and advance warning and inflammatory signs should remain clearly visible to approaching vehicle drivers. Authorisation of traffic police is required if these signals are to be used at road junctions.
Figure given in Fig-1 shows the layout of working zone and traffic control by portable traffic signals.
Works on footpaths Alternative way for pedestrians An alternative safe route for pedestrians must be provided, if it is necessary to close a foot-way or part of a foot-way. Temporary pedestrian way should never be less than 1 m wide and, wherever possible, they should be 1.5 m or more in width.
It must be ensured that pedestrians are not diverted onto an unguarded carriageway. Pedestrian Safety It should be ensured that there is no danger to pedestrians from falling objects or sharp edges and that they will not fall over or bump into anything. Scaffolding be marked with white bands at eye level and allow at least 2.10 m headroom. Kerb ramps or raised foot ways should be provided to help blind, poorly sighted, elderly and disabled people and for those with prams or wheel chairs.
Pedestrian Barriers
These should be used to mark out any temporary foot way.
A rigid barrier must always be used to protect pedestrian from traffic, excavations, plan or materials.
Place road danger lamps at the end of the barriers at night.
Portable pedestrian barriers which may include mesh, should be reasonably riding and have:- A hand rail fixed at between 1 m and 1.2 m above ground level, which should be reasonably smooth and rigid for pedestrians to hold to obtain guidance and some measure of support.
