STREETSCAPE GUIDANCE

Recommendations

Info

HOME INTRODUCTION PART A A vision for London’s streets PART B From strategy to delivery PART C New measures for new challenges PART D Balancing priorities PART F Appendix PART E Physical design and materials SECTION 6 Introduction SECTION 7 High quality footways SECTION 8 Carriageways SECTION 9 Crossings SECTION 10 Kerbside activity SECTION 11 Footway amenities SECTION 12 Safety and functionality SECTION 13 Street environment SECTION 14 Transport interchanges Streetscape Guidance Figure 110: Renewed red line markings Marking dimensions Many markings are fully dimensioned in the TSRGD and Traffic Signs Manual (TSM). These documents are the main resource for prescribing standard road markings. Markings should be provided to a maximum thickness of six millimetres where pedestrian activity might be expected. Any higher and the marking could pose a trip hazard or adversely impact on drainage. Red route road markings to diagrams 1018.1 and 1017 (TSRGD) should not be thinner than 100mm as this would pose an issue for enforcement cameras. Materials Expert advice should always be sought before prescribing the road marking material as a range of products are available with widely differing performance characteristics. Road markings are available as: • Water based paint – best restricted to roads with lower traffic flows as the markings are more prone to wear • Thermoplastics – standard paint system and should be avoided on concrete and natural stone • Preformed markings – preferred where complex shapes and symbols are required • Cold plastic – can be used to mark pedestrian crossings, yellow boxes, bus lanes and other common road markings. If applied well it can last between four to eight years • Setts – where setts are used on a side road entry treatment, red setts are permitted to designate the red route but are not a requirement; conventional markings may be used [Part E – Physical design and materials] Carriageways 110
HOME INTRODUCTION PART A A vision for London’s streets PART B From strategy to delivery PART C New measures for new challenges PART D Balancing priorities PART F Appendix PART E Physical design and materials SECTION 6 Introduction SECTION 7 High quality footways SECTION 8 Carriageways SECTION 9 Crossings SECTION 10 Kerbside activity SECTION 11 Footway amenities SECTION 12 Safety and functionality SECTION 13 Street environment SECTION 14 Transport interchanges Streetscape Guidance [Part E – Physical design and materials] Carriageways 111 Performance Most road markings that have a regulatory function are required to incorporate a retroreflecting material such as glass beads that better reflect vehicle headlights (TSM chapter 5, table 23-1 and TSRGD). Line colours All markings and colours should be in accordance with the TSRGD, British Standards (BS EN 1790 and BS EN 1871) and our Design Standards for Signal Schemes in London. The colours white, red and yellow are prescribed for road marking materials on the TLRN. Black road marking materials may also be introduced where existing markings need to be temporarily obscured. Black road markings have been used to change an advisory cycle lane as a temporary measure. Figure 111: An advanced stop line coloured in sky blue on a Cycle Superhighway Coloured resin aggregates for larger areas of carriageway such as bus lanes or for demarcating cycle infrastructure are not formal road markings, but aim to improve the compliance of regulatory road marking signage. Road studs Retro-reflective road studs may be used to supplement longitudinal road markings, and are particularly effective for areas with low lighting levels. Metal road studs should be avoided as they can cause problems for two-wheeled vehicles. Removal It is important that all the material used to define the road marking is removed where new marking arrangements are proposed. Ghost images of old markings are unsightly, detract from the streetscape and can have an impact upon legibility and road safety. Trials – centreline removal Our aspiration for a safer network, reinforced through good design, has been put forward in a recent study which challenges conventional assumptions into the application of centrelines (Centreline removal trial, 2014). The study looks at the impact of removing centrelines on traffic speeds, across three outer London routes scheduled for resurfacing. Initial results suggest a consistent decrease in vehicle speeds as a result of the interventions. We will continue to monitor collision data at these sites and use this evidence to determine the long-term applicability of centreline removal for encouraging lower speed driving environments. Any centreline removal trial should be subject to a pre and postconstruction road safety audit. Maintenance Regulatory markings must be maintained adequately to provide good visual contrast and ensure good effective enforcement. To ensure this: • Road markings should be regularly reviewed to ensure good legibility and definition • Maintenance requirements are dependent on traffic flows, the material used and the position of the marking on the road surface, and so will not be the same for all types of street • During routine maintenance when road markings are often re-marked it is important to ensure the new surface is accurately applied over the old material so that the edges of the markings remain crisp and of the desired width • The excessive build up of thermoplastic can lead to the ponding of surface water and should be avoided
Page 1 and 2:
STREETSCAPE GUIDANCE Third Edition
Page 3 and 4:
HOME INTRODUCTION PART A A vision f
Page 5 and 6:
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
HOME Streetscape PART E Guidance Ph
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64: HOME INTRODUCTION PART A A vision f
Page 113: HOME INTRODUCTION PART A A vision f
Page 147 and 148: HOME PART E Physical design and mat
Page 165 and 166:
Page 167 and 168:
Page 169 and 170:
Page 171 and 172:
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
Page 179 and 180:
Page 181 and 182:
Page 183 and 184:
Page 185 and 186:
Page 187 and 188:
Page 189 and 190:
Page 191 and 192:
Page 193 and 194:
Page 195 and 196:
Page 197 and 198:
Page 199 and 200:
Page 201 and 202:
Page 203 and 204:
Page 205 and 206:
HOME PART E Physical design and mat
Page 207 and 208:
Page 209 and 210:
Page 211 and 212:
Page 213 and 214:
Page 215 and 216:
Page 217 and 218:
Page 219 and 220:
Page 221 and 222:
Page 223 and 224:
Page 225 and 226:
Page 227 and 228:
Page 229 and 230:
Page 231 and 232:
Page 233 and 234:
Page 235 and 236:
Page 237 and 238:
Page 239 and 240:
Page 241 and 242:
Page 243 and 244:
Page 245 and 246:
Page 247 and 248:
Page 249 and 250:
Page 251 and 252:
Page 253 and 254:
Page 255 and 256:
Page 257 and 258:
Page 259 and 260:
Page 261 and 262:
Page 263 and 264:
Page 265 and 266:
Page 267 and 268:
Page 269 and 270:
Page 271 and 272:
Page 273 and 274:
Page 275 and 276:
Page 277 and 278:
Page 279 and 280:
Page 281 and 282:
Page 283 and 284:
Page 285 and 286:
Page 287 and 288:
Page 289 and 290:
Page 291 and 292:
Page 293 and 294:
Page 295 and 296:
Page 297 and 298:
Page 299 and 300:
Page 301 and 302:
Page 303 and 304:
Page 305 and 306:
Page 307 and 308:
Page 309 and 310:
Page 311 and 312:
Page 313 and 314:
Page 315 and 316:
Page 317 and 318:
Page 319 and 320:
Page 321 and 322:
Page 323 and 324:
Page 325 and 326:
Page 327 and 328:
Page 329 and 330:
Page 331 and 332:
Page 333 and 334:
Page 335:
show all

STREETSCAPE GUIDANCE

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?