CC503 TRAFFIC ENGINEERING SPOT SPEED STUDY

CC503 TRAFFIC ENGINEERING SPOT SPEED STUDYnurul huda bt azmi 01dka11f2088 nurfarina bt abd rahman 01dka11f2124 norhayati bt mohamed 01dka11f2118 mohd syafiq bin rahim 01dka11f2133Muhamad kamarul nizam 01dka11f2166

Name of lecturer: EN. AZHAR B. MAT NOR

OBJECTIVETo determine and analyse the average speed of the roadway / highway.APPARATUS :

LOCATIONJalan Raja Musa Mahadi

PROCEDURESelect a suitable site along Jalan Raja Musa Mahadi road near the entrance of the polytechnic. (Make sure the site chosen is not dangerous and does not interfere with existing traffic).For the purpose of this study, an observer is appointed to observe vehicle speeds using radar gun. The radar gun send out a radio signal, then receive the same signal back as it bounces off the target object. However, due to a phenomenon called the Doppler Effect, if the object is moving, the frequency of the radio waves is different when they come back, and from that difference the radar gun can calculate the object's speed.Do these for 15O vehicles or more.

Sport Speed Study Data FormSpeed group (km/h)FrequencyCumulative frequencyPercentage Of Cumulative Frequency20-25110.6626-30010.6631-35674.6436-40192617.2241-45376341.7246-504510871.5251-552313186.7556-601514696.6961-65415099.3466-701151100Speed group (km/h)Upper BoundaryCumulative Frequency20-2525.5126-3030.5131-3535.5736-4040.52641-4545.56346-5050.510851-5555.513156-6060.514661-6565.515066-70 70.5151Speed group (km/h)Midpoint(x)FrequencyX2FxFx220-252315292352926-302807840031-353361089198653436-40381914447222743641-454337184915916841346-5048452304216010368051-555323280912196460756-60581533648705046061-6563439692521587666-7068146246846241517035 342159DiscussionBased on the data obtained, the highest speed groups is between 46-50 km/h and the frequency is 45 vehicles. With this experiment we can know the rate of safety at this area. This is the ways that people usually using for works at morning and back at evening. At this area has school and hostel, so many people will used this road. So the drivers should follow the rule that goverment has given. The reference point to end timing may be a signpost in the observers sight line. An accurate sketch of the site should be documented, including number of lanes, position of observer, and description of reference points.

CONCLUSIONThe conclusion is, Jalan Raja Musa Mahadi is safe for road user. This is because, road user is follower the speed limit and the road surface is in good condition. The highest frequency is 45 vehicles with the speed 46-50 Km/h and the lowest frequency is 1 vehicles with speed 21-25 Km/h 66-70 Km/h.