Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Explain the Perception Reaction Time
A significant variable in the successful processing and use of information is the speed with which this is done. Perception-Reaction Time (PRT) is a human factor often cited by traffic engineers concerned with safety. PRT is "the interval between the appearance of some object or condition in the driver's field of view and the initiation of a response" such as braking or changing course. Note that PRT involves the initiation of a response (e.g. pressing the brake), not the completion of the vehicle maneuver (stopping).
PRT depends on the situation. Response time is generally quickest when there is one specific response to be made to a single stimulus (brake lights of vehicle ahead). In the case of "choice reaction time," in which there is more than one stimulus and/or more than one possible response (e.g. toll plaza), reaction time increases as a function of the number of possibilities. A driver may, for example, have to decide whether to steer or brake, or both, to avoid a pedestrian. The PRT used for design standards by AASHTO includes 1.5 sec for perception and decision, 1.0 sec for making a response, for a total of 2.5 sec, which is generally considered adequate for all but the most complex driving situations.
Q. Replacement of loose rivets? i) Slight slackness of rivet does not cause loss of rivet strength. ii) Renewal of slack rivets should be done only when the slack rivets are
I. A horizontal 500 lb force acts at a point D of crankshaft AB which is held in static equilibrium by a twisting couple and by reactions at A and B. Knowing that the bearings are
Define the Working of Ground Penetrating Radar? Ground penetrating radars (GPR) and low frequency sound are also used in scour survey. These are good in shallow water but not v
An electrical contractor is preparing to place the duct bank concrete encasement for the high voltage feeders between manhole # 11 and # 12, total distance is 323-ft. The duct bank
Question What is the sucker deck principle for changeable depth bridge decks ? Answer For a variable depth bridge deck, depth of continuous multi-span bridge deck is greater tha
Question Why is it best to design storm water drains to match soffit? Answer Storm water drains gather storm water in their corresponding catchment areas throughout rainst
Define Corrosion - Deterioration of Steel Structures? Corrosion is the principle cause of deterioration of steel structures. Corrosion of steel is an electrochemical process th
how to convert uniformly varying loads to point loads
For a system or Net Work Done = Net Heat Added
Q. Energy absorbed in heeling during vessel berthing? When a vessel berths on a fender system at a pier, point of contact of berthing ship can be below or above the centre of
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd