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T.P.D.M.V.2.3 (Al/2001) Table 3.3.7.2 Minimum K Values for Vertical Sag Curves Design Speed km/h 120 100 85 80 70 60 50 Desirable Minimum 37 37 26 26 20 20 13 Absolute Minimum 37 26 20 20 20 13 9
T.P.D.M.V.2.3 (Al/2001) 33.8 Climbing lanes for Single Carriageway Roads 3.3.8.1 Gradients can cause severe congestion on single carriageways, where a slow moving goods vehicle will create long platoons of traffic if faster vehicles are unable to overtake. These platoons will frequently be unable to dissipate for a considerable distance, as overtaking is a difficult and hazardous manoeuvre on a 2 lane road. 3.3.8.2 When improving an existing single carriageway road, such congested locations will be readily identified. Significant improvements in flow will be effected by the strategic provision of climbing lanes at frequent intervals on gradients to permit overtaking where it is most necessary. It is not suitable to provide gradient/traffic criteria for the provision of climbing lanes on single carriageways. Each site must be considered individually in relation to overtaking possibilities on the route as a whole, to arrive at the most suitable means of achieving improvements to traffic flow. In some cases, the provision of a climbing lane on a 2-3% gradient may represent the most advantageous means of ensuring that steady progress can be made. As an interim measure, the construction of strategically located passing bays should be considered where it is likely that a full climbing lane could not be achieved for some period of time, and the length of the road in question is greater than 500m. 3.3.8.3 For new single carriageway rural roads the provision of climbing lanes on hills offers the most economic and effective means of ensuring that there are frequent opportunities for overtaking and the strategic placing of climbing lanes will ensure steady progress. As with existing single carriageway roads, it is not possible to provide gradient/traffic criteria and each site must be considered on its merits in relation to overtaking opportunities on the route as a whole. 3.3.8.4 The minimum carriageway width at climbing lanes should be 10m, divided into 3 lanes. The climbing lane should be 3.2m wide, the other two being 3.4m each. Appropriate double white line road markings should be in accordance with Volume 3. 3.3.8.5 Generally, the full width of the climbing lane should be provided at a point "S", 100m uphill from the point where the sag curve attains a 2% gradient, as shown in Diagram 3.3.8.1. A taper of 1 in 30 to 1 in 40 should be provided over the 100m length as in Diagram 3.3.8.2 3.3.8.6 The physical width of the climbing lane should generally be maintained to a point "F", 200m beyond the point where the crest curve reduces to 2% gradient, followed by a 100m taper. Cross hatching road markings and advance warning signs should be provided in advance of the taper, to channelise vehicles.(see Diagram 3.3.8.3). 3.3.8.7 At short hills, it may be necessary to commence the climbing lane in advance of point S so as to provide a minimum length of at least 200m of full width climbing lane. For existing roads, where crest curves may be substantially sharper than the minimum prescribed, it may be necessary to adopt a shorter terminal detail so as to prevent the lane reduction extending too far beyond the crest.
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§ • abc (*H#28572048 SHU ' 1999/
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Transport Planning & Design Manual
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T.P.D.M.V.2.1 - ' »1 PURPOSE 1 -1
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VOLUME1jTUNNELS Chapters 1. Introdu
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T.P.D.M.V.2.2 (Al/2001) Section Con
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Page 45 and 46: Revised in December 2001 TRANSPORT
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T.P.D.M.V.2.3 (Al/2001) (c) (d) Nee
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T.P.D.M.V.2.3 (Al/2001) 3.7.2 At-Gr
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T.PD.M.V.2.3 (Al/2001) 3.7.3 Zebra
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T.P.D.M.V.2.3 GJVE WAY UNE o 4U «4
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T.P.D.M.V.2.3 (Al/2001) 3.7.3.11 De
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T.P.D.M.V.2.3 (Al/2001) 3.7.4.10 Th
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T.P.D.M.V.2.3 (Al/2001) 3.7.6 Uncon
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T.PD.M.V.2.3 (Al/2001) 3.7.7.7 Tabl
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T.P.D.M.V.2.3 Maitfri Cyefe Trade T
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T.P.D.M.V.2.3 (Al/2001) Table 3.7.7
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T.P.D.M.V.2.3 (Al/2001) 3.7.8 Escal
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T.P.D.M.V.2.3 (Al/2001) 3.8.2 Provi
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T.P.D.M. V.2.3 (Al/2001) 3.8.3.9 No
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T.P.D.M. V.2.3 (Al/2001) 3.9 Railin
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T.P.D.M. V.2.3 (Al/2001) 3.9.2.9 Ra
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T.P.D.M. V.2.3 (Al/2001) 3.9.3 Barr
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T.PD.M. V.2.3 (Al/2001) 3.9.3.8 The
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T.P.D.M. V.2.3 (Al/2001) 3.9.3.26 A
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T.P.D.M. V.2.3 (Al/2001) 3.9.3.36 T
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T.PD.M. V.2.3 (Al/2001) 3.9.4.9 Sin
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T.P.D.M. V.2.3 (Al/2001) 3.10.2 Roa
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T.P.D.M. V.2.3 (Al/2001) TUNNEL iim
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T.P.D.M. V.2.3 (Al/2001) 3.11 Singl
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T.P.D.M. V.2.3 (Al/2001) 3.11.4 Hor
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T.P.D.M. V.2.3 (Al/2001) 3.11.7 Min
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T.P.D.M. V.2.3 (Al/2001) 3.1 L9 Pas
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Revised in December 2001 TRANSPORT
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T.P.D.M.V.2.4 4.5.13 Roundabout Exi
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T.P.D.M.V.2.4 4.6.9.5 Diverging Lan
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T.P.D.M.V.2.4 4.2 Junction Design -
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T.P.D.M.V.2.4 (Al/2001) Mrnor Road
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T.P.D.M.V.2.4 4.2.5 Delay 4.2.5.1 O
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T.P.D.M.V.2.4 4.2.7 Economic Consid
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T.P.D.M.V.2.4 (Al/2001) 4.2.9 Choic
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T.P.D.M.V.2.4 (Al/2001) 4,2.10 Spac
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T.P.D.M.V.2.4 4.3.2 Types of Priori
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4*3*3 Siting of Priority Junctions
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4.3.5 Pedestrian Facilities at Prio
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T.P.DJM.V.2.4 4,3.6*6 The predictiv
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T.P.D.M*V.2.4 4.3.8 Visibility Spla
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A1/88 FOR VEHICLE WAITING TO TURN R
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T.P.O.M V.2.4. FRONT KERB FRONT KER
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T.P.D.M.V.2.4 4.3.9.4 For shadow is
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T.P.D.M.V.2.4 4*3»10 Left TurningL
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T.P.D.M.V.2.4 ^•3*12 Traffic Isla
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T.P.D.M.V.2.4 4.3.14 Corner Badil 4
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T.P.D.M.V.2.4 4,3*16 Recommended La
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T.P.D.M.V.2.4 Diagram No. 4.3.16.8
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T*P.D*M.V.2.4 (v) For left hand spl
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T. P.D M V 24 3.65 CE=E 3.65- 1s25t
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T. P.D.M V.2.4 Keep Leff sign Keep
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T. P D M V 24 Compound curve for di
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T. P. D.M V.2 4 ^ —-• — —"
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T. P.D.M.V 24 1:20 taper RIGHT/LEFT
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T. P.D.M.V.2.4 1*25 taper 1 Diagram
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T P D M V 24 125 taper •UphiU gra
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T.P.D.M*V*2.4 Signal Controlled Jun
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4.5.2 Normal Roundabouts 4.5.2.1 No
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NORMAL ROUNDABOUT T.P.O.M.V. 2.4. T
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T.P.O.M.V. 2.4. CONTIGUOUS DOUBLE R
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T.P.D.M.V.2.4. TWO BRIDGE ROUNDABOU
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TP.D.M.V 2.4. STRAIGHT SECTION PROV
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T.P.D«M.V*2.4 4*5.8 Pedestrian t C
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T.P.D.M.7.2JI 4*5.9*** The predicti
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T.P.D.M.V.2.4 4.5.11 Visibility 4.5
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DESIRABLE/MINIMUM VISIBILITY DISTAN
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T.P.O.M.V. 2 .4. HALF LANE WIDTH DI
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T.RD.M.V.2.4. MINIMUM AREA OVER WHI
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T.P.D.M.V.2.4 in the entry as shown
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.P.O.M.V.2>. ENTRY DEFLECTION ACHIE
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T.P.D.M.V.2.4 4.5*13 Roundabout Exi
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T.P.D.M.V.2.4 4*5.15 Inscribed Circ
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T.P.D.M.V.2.4 4.5.16 Segregated Lef
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Note:- This is not a recommendation
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T.P.D.M.V.2.4 4.5.17 Superelevation
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(b) DIVIDING CIRCULATORY CARRIAGEWA
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T.P.DJM.V.2.4 4.5.18 Signing and Li
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T.P.B.M.7.2.4 4.6 Grade Separated J
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T.P.D.M.7.2.4 4.6.2.7 The Partial C
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4*6*3 Siting of Grade Separated Jun
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4,6.5 General Layout Requirements 4
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T.P.D.M.V.2.4 ^6* 7 Slip Roads 4.6.
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T.P.D.M.V.2.4 4*6.7.12 The width of
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T.P.O.M.V.2.4. FIG. A 100 EDGE LINE
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T.P.D.M.V.2.4 4.6.8.7 The method of
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T.P.D.M.V.2.4 downstream. The layou
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DIRECT ENTRY MERGING UN£ (TYPES 2
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T.P.D.H.V. 2.4 TO SUIT SITE ADDITIO
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T*P*D.M.V.2.4 4.6.9*7 The design fl
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I.P.O.M.V.2.
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T,P*D.M*V.2*4 4.6.10 Weaving Sectio
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44-
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T.P.D.M.V.2.4 APPENDIX 1 ! Calculat
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T.P.D.M.V.2.4 If right and left tur
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T.P.D.M.V.2.4 4» Applying the stre
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T.P.D.M.V.2.4 The toui parts of dmw
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T.P.D.M.V.2.4 APPENDIX 2 Calculatio
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T.P.D.M.V.2.4 D=the inscribed circl
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T.P.D.M.V.2.H (v) The vehicle proce
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T.P.D.M.V.2.4 4. Using these design
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T.P.D.M.V.2.4 APPENDIX 3 Examples o
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T*P*D*M.V.2.4 The average gradient
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Revised in March 2002 TRANSPORT PLA
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T.P.D.M. V.2.5 5.1 References 1. Ch
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T.P.D.M. V.2.5 (Al/2002) 5.3 Petrol
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T.P.D.M. V.2.5 (Al/2002) 53.2 Layou
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T.P.D.M. V.2.5 5.4 Additional Speed
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T.P.D.M. V.2.5 (Al/2002) 5.43 Road
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T.P.D.M. V.2.5 (Al/2002) (vii) With
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1 R D. M, V. 2.5 Edge of Carriagewa
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T.P.D.M. V.2.5 (Al/2002) 5.4.4 Tran
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T.P.D.M. V.2.5 (Al/2002) 5.4.5.8 Us
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T.P.D.M. V.2.5 5.4.6.11 As with rum
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T.P.D.M. V.2.5 (Al/2002) 5.5.2 Gene
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T.P.D.M. V.2.5 (Al/2002) 5.6.2 Aspe
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T.P.D.M. V.2.5 (Al/2002) 5.6.2.12 W
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T.P.D.M. V.2.5 (Al/2002) 5.6.3.3 Tr
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Revised in March 2002 TRANSPORT PLA
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T.P.DJVLV.2.6 (Al/2002) Diagrams 6.
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T.RD.M.V.2.6 (Al/2002) 6.2 Introduc
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T.RD.M.V.2.6 (Al/2002) 63 Expresswa
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T.RD.M.V.2.6 (Al/2002) 63.2 Horizon
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NOTES 1. FOR DETAILS OF ROAD STUDS
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1. FOR DETAILS OF ROAD STUDS AND MA
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T.P.D.M.V.2.6 (A1/2002) CENTRAL RES
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T.P.D.M.V.2.6 (A1/2002) •FACE OF
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10&Q BOUMQA8Y FENCE 1 38UNQARY FENC
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T.RD.M.V.2.6 (Al/2002) v) earth mou
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T.RD.M.V.2.6 (Al/2002) 6.3,4 Draina
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T.RD.M. V.2.6 (Al/2002) 63.6 Juncti
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T.P.D.M.V.2.6 (A172002) DIRECT ENTR
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MIN. LANE WIDTH 3.7m ISLAND WIDTH 2
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T.P.D.M.V.2.6 (A172002) 70 NOSE DIR
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T.P.D.M.V.2.6 (A1/2002) 130 70 NOSE
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T.RD.M.V.2.6 6.4 Permanent Signs an
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T.P.D.M.V.2.6 (Al/2002) i l FOR 2 L
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T.RD.M.V.2.6 (Al/2002) 6.4.1.10 Det
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T.PD.M.V.2.6 (Al/2002) 6.4.2 Direct
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T.P.D.M.V.2.6 (Al/2002) (a) Layout
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T.P.D.M.V.2.6 (Al/2002) 6.43 Chaina
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TJP.D.M.V.2.6 (Al/2002) 6.4.4.7 In
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T.P.D.MV.2.6 (Al/2002) 6.6 Maintena
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T.P.D.M.V.2.6 (A1/2002) BEARS MINOR
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T.P.D.M.V.2.6 (Al/2002) 6.7.2.9 Whe
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T.P.D.M. V.2.6 (Al/2002) 6,8.2 Acti
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